示例#1
0
文件: builtin-merge.c 项目: samv/git
int cmd_merge(int argc, const char **argv, const char *prefix)
{
	unsigned char result_tree[20];
	struct strbuf buf = STRBUF_INIT;
	const char *head_arg;
	int flag, head_invalid = 0, i;
	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
	struct commit_list *common = NULL;
	const char *best_strategy = NULL, *wt_strategy = NULL;
	struct commit_list **remotes = &remoteheads;

	if (file_exists(git_path("MERGE_HEAD")))
		die("You have not concluded your merge. (MERGE_HEAD exists)");
	if (read_cache_unmerged())
		die("You are in the middle of a conflicted merge."
				" (index unmerged)");

	/*
	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
	 * current branch.
	 */
	branch = resolve_ref("HEAD", head, 0, &flag);
	if (branch && !prefixcmp(branch, "refs/heads/"))
		branch += 11;
	if (is_null_sha1(head))
		head_invalid = 1;

	git_config(git_merge_config, NULL);

	/* for color.ui */
	if (diff_use_color_default == -1)
		diff_use_color_default = git_use_color_default;

	argc = parse_options(argc, argv, prefix, builtin_merge_options,
			builtin_merge_usage, 0);
	if (verbosity < 0)
		show_diffstat = 0;

	if (squash) {
		if (!allow_fast_forward)
			die("You cannot combine --squash with --no-ff.");
		option_commit = 0;
	}

	if (!allow_fast_forward && fast_forward_only)
		die("You cannot combine --no-ff with --ff-only.");

	if (!argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	/*
	 * This could be traditional "merge <msg> HEAD <commit>..."  and
	 * the way we can tell it is to see if the second token is HEAD,
	 * but some people might have misused the interface and used a
	 * committish that is the same as HEAD there instead.
	 * Traditional format never would have "-m" so it is an
	 * additional safety measure to check for it.
	 */

	if (!have_message && is_old_style_invocation(argc, argv)) {
		strbuf_addstr(&merge_msg, argv[0]);
		head_arg = argv[1];
		argv += 2;
		argc -= 2;
	} else if (head_invalid) {
		struct object *remote_head;
		/*
		 * If the merged head is a valid one there is no reason
		 * to forbid "git merge" into a branch yet to be born.
		 * We do the same for "git pull".
		 */
		if (argc != 1)
			die("Can merge only exactly one commit into "
				"empty head");
		if (squash)
			die("Squash commit into empty head not supported yet");
		if (!allow_fast_forward)
			die("Non-fast-forward commit does not make sense into "
			    "an empty head");
		remote_head = peel_to_type(argv[0], 0, NULL, OBJ_COMMIT);
		if (!remote_head)
			die("%s - not something we can merge", argv[0]);
		update_ref("initial pull", "HEAD", remote_head->sha1, NULL, 0,
				DIE_ON_ERR);
		reset_hard(remote_head->sha1, 0);
		return 0;
	} else {
		struct strbuf msg = STRBUF_INIT;

		/* We are invoked directly as the first-class UI. */
		head_arg = "HEAD";

		/*
		 * All the rest are the commits being merged;
		 * prepare the standard merge summary message to
		 * be appended to the given message.  If remote
		 * is invalid we will die later in the common
		 * codepath so we discard the error in this
		 * loop.
		 */
		if (!have_message) {
			for (i = 0; i < argc; i++)
				merge_name(argv[i], &msg);
			fmt_merge_msg(option_log, &msg, &merge_msg);
			if (merge_msg.len)
				strbuf_setlen(&merge_msg, merge_msg.len-1);
		}
	}

	if (head_invalid || !argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	strbuf_addstr(&buf, "merge");
	for (i = 0; i < argc; i++)
		strbuf_addf(&buf, " %s", argv[i]);
	setenv("GIT_REFLOG_ACTION", buf.buf, 0);
	strbuf_reset(&buf);

	for (i = 0; i < argc; i++) {
		struct object *o;
		struct commit *commit;

		o = peel_to_type(argv[i], 0, NULL, OBJ_COMMIT);
		if (!o)
			die("%s - not something we can merge", argv[i]);
		commit = lookup_commit(o->sha1);
		commit->util = (void *)argv[i];
		remotes = &commit_list_insert(commit, remotes)->next;

		strbuf_addf(&buf, "GITHEAD_%s", sha1_to_hex(o->sha1));
		setenv(buf.buf, argv[i], 1);
		strbuf_reset(&buf);
	}

	if (!use_strategies) {
		if (!remoteheads->next)
			add_strategies(pull_twohead, DEFAULT_TWOHEAD);
		else
			add_strategies(pull_octopus, DEFAULT_OCTOPUS);
	}

	for (i = 0; i < use_strategies_nr; i++) {
		if (use_strategies[i]->attr & NO_FAST_FORWARD)
			allow_fast_forward = 0;
		if (use_strategies[i]->attr & NO_TRIVIAL)
			allow_trivial = 0;
	}

	if (!remoteheads->next)
		common = get_merge_bases(lookup_commit(head),
				remoteheads->item, 1);
	else {
		struct commit_list *list = remoteheads;
		commit_list_insert(lookup_commit(head), &list);
		common = get_octopus_merge_bases(list);
		free(list);
	}

	update_ref("updating ORIG_HEAD", "ORIG_HEAD", head, NULL, 0,
		DIE_ON_ERR);

	if (!common)
		; /* No common ancestors found. We need a real merge. */
	else if (!remoteheads->next && !common->next &&
			common->item == remoteheads->item) {
		/*
		 * If head can reach all the merge then we are up to date.
		 * but first the most common case of merging one remote.
		 */
		finish_up_to_date("Already up-to-date.");
		return 0;
	} else if (allow_fast_forward && !remoteheads->next &&
			!common->next &&
			!hashcmp(common->item->object.sha1, head)) {
		/* Again the most common case of merging one remote. */
		struct strbuf msg = STRBUF_INIT;
		struct object *o;
		char hex[41];

		strcpy(hex, find_unique_abbrev(head, DEFAULT_ABBREV));

		if (verbosity >= 0)
			printf("Updating %s..%s\n",
				hex,
				find_unique_abbrev(remoteheads->item->object.sha1,
				DEFAULT_ABBREV));
		strbuf_addstr(&msg, "Fast-forward");
		if (have_message)
			strbuf_addstr(&msg,
				" (no commit created; -m option ignored)");
		o = peel_to_type(sha1_to_hex(remoteheads->item->object.sha1),
			0, NULL, OBJ_COMMIT);
		if (!o)
			return 1;

		if (checkout_fast_forward(head, remoteheads->item->object.sha1))
			return 1;

		finish(o->sha1, msg.buf);
		drop_save();
		return 0;
	} else if (!remoteheads->next && common->next)
		;
		/*
		 * We are not doing octopus and not fast-forward.  Need
		 * a real merge.
		 */
	else if (!remoteheads->next && !common->next && option_commit) {
		/*
		 * We are not doing octopus, not fast-forward, and have
		 * only one common.
		 */
		refresh_cache(REFRESH_QUIET);
		if (allow_trivial && !fast_forward_only) {
			/* See if it is really trivial. */
			git_committer_info(IDENT_ERROR_ON_NO_NAME);
			printf("Trying really trivial in-index merge...\n");
			if (!read_tree_trivial(common->item->object.sha1,
					head, remoteheads->item->object.sha1))
				return merge_trivial();
			printf("Nope.\n");
		}
	} else {
		/*
		 * An octopus.  If we can reach all the remote we are up
		 * to date.
		 */
		int up_to_date = 1;
		struct commit_list *j;

		for (j = remoteheads; j; j = j->next) {
			struct commit_list *common_one;

			/*
			 * Here we *have* to calculate the individual
			 * merge_bases again, otherwise "git merge HEAD^
			 * HEAD^^" would be missed.
			 */
			common_one = get_merge_bases(lookup_commit(head),
				j->item, 1);
			if (hashcmp(common_one->item->object.sha1,
				j->item->object.sha1)) {
				up_to_date = 0;
				break;
			}
		}
		if (up_to_date) {
			finish_up_to_date("Already up-to-date. Yeeah!");
			return 0;
		}
	}

	if (fast_forward_only)
		die("Not possible to fast-forward, aborting.");

	/* We are going to make a new commit. */
	git_committer_info(IDENT_ERROR_ON_NO_NAME);

	/*
	 * At this point, we need a real merge.  No matter what strategy
	 * we use, it would operate on the index, possibly affecting the
	 * working tree, and when resolved cleanly, have the desired
	 * tree in the index -- this means that the index must be in
	 * sync with the head commit.  The strategies are responsible
	 * to ensure this.
	 */
	if (use_strategies_nr != 1) {
		/*
		 * Stash away the local changes so that we can try more
		 * than one.
		 */
		save_state();
	} else {
		memcpy(stash, null_sha1, 20);
	}

	for (i = 0; i < use_strategies_nr; i++) {
		int ret;
		if (i) {
			printf("Rewinding the tree to pristine...\n");
			restore_state();
		}
		if (use_strategies_nr != 1)
			printf("Trying merge strategy %s...\n",
				use_strategies[i]->name);
		/*
		 * Remember which strategy left the state in the working
		 * tree.
		 */
		wt_strategy = use_strategies[i]->name;

		ret = try_merge_strategy(use_strategies[i]->name,
			common, head_arg);
		if (!option_commit && !ret) {
			merge_was_ok = 1;
			/*
			 * This is necessary here just to avoid writing
			 * the tree, but later we will *not* exit with
			 * status code 1 because merge_was_ok is set.
			 */
			ret = 1;
		}

		if (ret) {
			/*
			 * The backend exits with 1 when conflicts are
			 * left to be resolved, with 2 when it does not
			 * handle the given merge at all.
			 */
			if (ret == 1) {
				int cnt = evaluate_result();

				if (best_cnt <= 0 || cnt <= best_cnt) {
					best_strategy = use_strategies[i]->name;
					best_cnt = cnt;
				}
			}
			if (merge_was_ok)
				break;
			else
				continue;
		}

		/* Automerge succeeded. */
		write_tree_trivial(result_tree);
		automerge_was_ok = 1;
		break;
	}

	/*
	 * If we have a resulting tree, that means the strategy module
	 * auto resolved the merge cleanly.
	 */
	if (automerge_was_ok)
		return finish_automerge(common, result_tree, wt_strategy);

	/*
	 * Pick the result from the best strategy and have the user fix
	 * it up.
	 */
	if (!best_strategy) {
		restore_state();
		if (use_strategies_nr > 1)
			fprintf(stderr,
				"No merge strategy handled the merge.\n");
		else
			fprintf(stderr, "Merge with strategy %s failed.\n",
				use_strategies[0]->name);
		return 2;
	} else if (best_strategy == wt_strategy)
		; /* We already have its result in the working tree. */
	else {
		printf("Rewinding the tree to pristine...\n");
		restore_state();
		printf("Using the %s to prepare resolving by hand.\n",
			best_strategy);
		try_merge_strategy(best_strategy, common, head_arg);
	}

	if (squash)
		finish(NULL, NULL);
	else {
		int fd;
		struct commit_list *j;

		for (j = remoteheads; j; j = j->next)
			strbuf_addf(&buf, "%s\n",
				sha1_to_hex(j->item->object.sha1));
		fd = open(git_path("MERGE_HEAD"), O_WRONLY | O_CREAT, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_HEAD"));
		if (write_in_full(fd, buf.buf, buf.len) != buf.len)
			die_errno("Could not write to '%s'", git_path("MERGE_HEAD"));
		close(fd);
		strbuf_addch(&merge_msg, '\n');
		fd = open(git_path("MERGE_MSG"), O_WRONLY | O_CREAT, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_MSG"));
		if (write_in_full(fd, merge_msg.buf, merge_msg.len) !=
			merge_msg.len)
			die_errno("Could not write to '%s'", git_path("MERGE_MSG"));
		close(fd);
		fd = open(git_path("MERGE_MODE"), O_WRONLY | O_CREAT | O_TRUNC, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_MODE"));
		strbuf_reset(&buf);
		if (!allow_fast_forward)
			strbuf_addf(&buf, "no-ff");
		if (write_in_full(fd, buf.buf, buf.len) != buf.len)
			die_errno("Could not write to '%s'", git_path("MERGE_MODE"));
		close(fd);
	}

	if (merge_was_ok) {
		fprintf(stderr, "Automatic merge went well; "
			"stopped before committing as requested\n");
		return 0;
	} else
		return suggest_conflicts();
}
示例#2
0
文件: clone.c 项目: 00027jang27/git
int cmd_clone(int argc, const char **argv, const char *prefix)
{
	int is_bundle = 0, is_local;
	struct stat buf;
	const char *repo_name, *repo, *work_tree, *git_dir;
	char *path, *dir;
	int dest_exists;
	const struct ref *refs, *remote_head;
	const struct ref *remote_head_points_at;
	const struct ref *our_head_points_at;
	struct ref *mapped_refs;
	const struct ref *ref;
	struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
	struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
	struct transport *transport = NULL;
	const char *src_ref_prefix = "refs/heads/";
	struct remote *remote;
	int err = 0, complete_refs_before_fetch = 1;

	struct refspec *refspec;
	const char *fetch_pattern;

	junk_pid = getpid();

	packet_trace_identity("clone");
	argc = parse_options(argc, argv, prefix, builtin_clone_options,
			     builtin_clone_usage, 0);

	if (argc > 2)
		usage_msg_opt(_("Too many arguments."),
			builtin_clone_usage, builtin_clone_options);

	if (argc == 0)
		usage_msg_opt(_("You must specify a repository to clone."),
			builtin_clone_usage, builtin_clone_options);

	if (option_single_branch == -1)
		option_single_branch = option_depth ? 1 : 0;

	if (option_mirror)
		option_bare = 1;

	if (option_bare) {
		if (option_origin)
			die(_("--bare and --origin %s options are incompatible."),
			    option_origin);
		if (real_git_dir)
			die(_("--bare and --separate-git-dir are incompatible."));
		option_no_checkout = 1;
	}

	if (!option_origin)
		option_origin = "origin";

	repo_name = argv[0];

	path = get_repo_path(repo_name, &is_bundle);
	if (path)
		repo = xstrdup(absolute_path(repo_name));
	else if (!strchr(repo_name, ':'))
		die(_("repository '%s' does not exist"), repo_name);
	else
		repo = repo_name;
	is_local = option_local != 0 && path && !is_bundle;
	if (is_local && option_depth)
		warning(_("--depth is ignored in local clones; use file:// instead."));
	if (option_local > 0 && !is_local)
		warning(_("--local is ignored"));

	if (argc == 2)
		dir = xstrdup(argv[1]);
	else
		dir = guess_dir_name(repo_name, is_bundle, option_bare);
	strip_trailing_slashes(dir);

	dest_exists = !stat(dir, &buf);
	if (dest_exists && !is_empty_dir(dir))
		die(_("destination path '%s' already exists and is not "
			"an empty directory."), dir);

	strbuf_addf(&reflog_msg, "clone: from %s", repo);

	if (option_bare)
		work_tree = NULL;
	else {
		work_tree = getenv("GIT_WORK_TREE");
		if (work_tree && !stat(work_tree, &buf))
			die(_("working tree '%s' already exists."), work_tree);
	}

	if (option_bare || work_tree)
		git_dir = xstrdup(dir);
	else {
		work_tree = dir;
		git_dir = mkpathdup("%s/.git", dir);
	}

	if (!option_bare) {
		junk_work_tree = work_tree;
		if (safe_create_leading_directories_const(work_tree) < 0)
			die_errno(_("could not create leading directories of '%s'"),
				  work_tree);
		if (!dest_exists && mkdir(work_tree, 0777))
			die_errno(_("could not create work tree dir '%s'."),
				  work_tree);
		set_git_work_tree(work_tree);
	}
	junk_git_dir = git_dir;
	atexit(remove_junk);
	sigchain_push_common(remove_junk_on_signal);

	if (safe_create_leading_directories_const(git_dir) < 0)
		die(_("could not create leading directories of '%s'"), git_dir);

	set_git_dir_init(git_dir, real_git_dir, 0);
	if (real_git_dir) {
		git_dir = real_git_dir;
		junk_git_dir = real_git_dir;
	}

	if (0 <= option_verbosity) {
		if (option_bare)
			printf(_("Cloning into bare repository '%s'...\n"), dir);
		else
			printf(_("Cloning into '%s'...\n"), dir);
	}
	init_db(option_template, INIT_DB_QUIET);
	write_config(&option_config);

	git_config(git_default_config, NULL);

	if (option_bare) {
		if (option_mirror)
			src_ref_prefix = "refs/";
		strbuf_addstr(&branch_top, src_ref_prefix);

		git_config_set("core.bare", "true");
	} else {
		strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
	}

	strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
	strbuf_addf(&key, "remote.%s.url", option_origin);
	git_config_set(key.buf, repo);
	strbuf_reset(&key);

	if (option_reference.nr)
		setup_reference();

	fetch_pattern = value.buf;
	refspec = parse_fetch_refspec(1, &fetch_pattern);

	strbuf_reset(&value);

	remote = remote_get(option_origin);
	transport = transport_get(remote, remote->url[0]);

	if (!is_local) {
		if (!transport->get_refs_list || !transport->fetch)
			die(_("Don't know how to clone %s"), transport->url);

		transport_set_option(transport, TRANS_OPT_KEEP, "yes");

		if (option_depth)
			transport_set_option(transport, TRANS_OPT_DEPTH,
					     option_depth);
		if (option_single_branch)
			transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");

		transport_set_verbosity(transport, option_verbosity, option_progress);

		if (option_upload_pack)
			transport_set_option(transport, TRANS_OPT_UPLOADPACK,
					     option_upload_pack);

		if (transport->smart_options && !option_depth)
			transport->smart_options->check_self_contained_and_connected = 1;
	}

	refs = transport_get_remote_refs(transport);

	if (refs) {
		mapped_refs = wanted_peer_refs(refs, refspec);
		/*
		 * transport_get_remote_refs() may return refs with null sha-1
		 * in mapped_refs (see struct transport->get_refs_list
		 * comment). In that case we need fetch it early because
		 * remote_head code below relies on it.
		 *
		 * for normal clones, transport_get_remote_refs() should
		 * return reliable ref set, we can delay cloning until after
		 * remote HEAD check.
		 */
		for (ref = refs; ref; ref = ref->next)
			if (is_null_sha1(ref->old_sha1)) {
				complete_refs_before_fetch = 0;
				break;
			}

		if (!is_local && !complete_refs_before_fetch)
			transport_fetch_refs(transport, mapped_refs);

		remote_head = find_ref_by_name(refs, "HEAD");
		remote_head_points_at =
			guess_remote_head(remote_head, mapped_refs, 0);

		if (option_branch) {
			our_head_points_at =
				find_remote_branch(mapped_refs, option_branch);

			if (!our_head_points_at)
				die(_("Remote branch %s not found in upstream %s"),
				    option_branch, option_origin);
		}
		else
			our_head_points_at = remote_head_points_at;
	}
	else {
		warning(_("You appear to have cloned an empty repository."));
		mapped_refs = NULL;
		our_head_points_at = NULL;
		remote_head_points_at = NULL;
		remote_head = NULL;
		option_no_checkout = 1;
		if (!option_bare)
			install_branch_config(0, "master", option_origin,
					      "refs/heads/master");
	}

	write_refspec_config(src_ref_prefix, our_head_points_at,
			remote_head_points_at, &branch_top);

	if (is_local)
		clone_local(path, git_dir);
	else if (refs && complete_refs_before_fetch)
		transport_fetch_refs(transport, mapped_refs);

	update_remote_refs(refs, mapped_refs, remote_head_points_at,
			   branch_top.buf, reflog_msg.buf, transport);

	update_head(our_head_points_at, remote_head, reflog_msg.buf);

	transport_unlock_pack(transport);
	transport_disconnect(transport);

	junk_mode = JUNK_LEAVE_REPO;
	err = checkout();

	strbuf_release(&reflog_msg);
	strbuf_release(&branch_top);
	strbuf_release(&key);
	strbuf_release(&value);
	junk_mode = JUNK_LEAVE_ALL;
	return err;
}
示例#3
0
int chk_positive(int result, char *msg)
{
	if (result <= 0)
		die_errno("%s", msg);
	return result;
}
示例#4
0
static int cmd_import(const char *line)
{
	int code;
	int dumpin_fd;
	char *note_msg;
	struct object_id head_oid;
	unsigned int startrev;
	struct child_process svndump_proc = CHILD_PROCESS_INIT;
	const char *command = "svnrdump";

	if (read_ref(private_ref, &head_oid))
		startrev = 0;
	else {
		note_msg = read_ref_note(&head_oid);
		if(note_msg == NULL) {
			warning("No note found for %s.", private_ref);
			startrev = 0;
		} else {
			struct rev_note note = { 0 };
			if (parse_rev_note(note_msg, &note))
				die("Revision number couldn't be parsed from note.");
			startrev = note.rev_nr + 1;
			free(note_msg);
		}
	}
	check_or_regenerate_marks(startrev - 1);

	if (dump_from_file) {
		dumpin_fd = open(url, O_RDONLY);
		if(dumpin_fd < 0)
			die_errno("Couldn't open svn dump file %s.", url);
	} else {
		svndump_proc.out = -1;
		argv_array_push(&svndump_proc.args, command);
		argv_array_push(&svndump_proc.args, "dump");
		argv_array_push(&svndump_proc.args, url);
		argv_array_pushf(&svndump_proc.args, "-r%u:HEAD", startrev);

		code = start_command(&svndump_proc);
		if (code)
			die("Unable to start %s, code %d", command, code);
		dumpin_fd = svndump_proc.out;
	}
	/* setup marks file import/export */
	printf("feature import-marks-if-exists=%s\n"
			"feature export-marks=%s\n", marksfilename, marksfilename);

	svndump_init_fd(dumpin_fd, STDIN_FILENO);
	svndump_read(url, private_ref, notes_ref);
	svndump_deinit();
	svndump_reset();

	close(dumpin_fd);
	if (!dump_from_file) {
		code = finish_command(&svndump_proc);
		if (code)
			warning("%s, returned %d", command, code);
	}

	return 0;
}
int main(int argc, char *argv[]) {
    unsigned int login = 0, usage = 0;

    if (argc > 1) {
        if (!strcmp(argv[1], "-l")) {
            login = 1;
            argv[1] = argv[0];
            argv++;
            argc--;
        } else if (!strcmp(argv[1], "-v") ||
                !strcmp(argv[1], "--version")) {
            printf("%s version %s\n    Supported OSes: %s\n",
                    argv[0], version, supported_oses);
            exit(0);
        } else if (*argv[1] == '-') {
            warn("unknown option: %s", argv[1]);
            usage = 2;
        }
    }
    if (argc < 2)
        usage = 1;
    if (usage)
        die(usage, "usage: %s [-l] <program> [args...]\n%s", argv[0], usage_msg);

    unsigned int os = 0;

    struct utsname u;
    if (uname(&u)) {
        warn_errno("uname failed");
        goto reattach_failed;
    }
    if (strcmp(u.sysname, "Darwin")) {
        warn("unsupported OS sysname: %s", u.sysname);
        goto reattach_failed;
    }

    char *rest, *whole = strdup(u.release);
    if (!whole) {
        warn_errno("strdup failed");
        goto reattach_failed;
    }
    rest = whole;
    strsep(&rest, ".");
    if (whole && *whole && whole != rest) {
        int major = atoi(whole);
        os = 100000;    /* 10.1, 10.0 and prior betas/previews */
        if (major >= 6) /* 10.2 and newer */
            os += (major-4) * 100;
    }
    else
        warn("unparsable major release number: '%s'", u.release);

    free(whole);

    /*
     * change the 'os' variable to represent the "reattach variation"
     * instead of the major OS release
     *
     *  older => 100500 with warning
     *   10.5 => 100500
     *   10.6 => 100600
     *   10.7 => 100600
     *   10.8 => 100600
     *   10.9 => 100600
     *   10.10=> 101000
     *   10.11=> 101000
     *   10.12=> 101000
     *  newer => 101000 with warning
     */
    if (100600 <= os && os <= 100900)
        os = 100600;
    else if (101000 <= os && os <= 101200)
      os = 101000;
    else if (os < 100500) {
        warn("%s: unsupported old OS, trying as if it were 10.5", argv[0]);
        os = 100500;
    } else if (os > 101200) {
        warn("%s: unsupported new OS, trying as if it were 10.10", argv[0]);
        os = 101000;
    }

    if (move_to_user_namespace(os) != 0) {
reattach_failed:
        warn("%s: unable to reattach", argv[0]);
    }

    char **newargs = NULL;
    const char *file = argv[1];
    if (login) {
        /*
         * For their argv[0], take the bit of file after the
         * last slash (the whole thing if there is no slash
         * or if that bit would be zero length) and prefix
         * it with '-'.
         */
        char *arg0 = malloc(strlen(file) + 2);
        if (!arg0)
            goto exec_it;
        *arg0 = '-';
        char *slash = strrchr(file, '/');
        if (slash && slash[1])
            strcpy(arg0+1, slash+1);
        else
            strcpy(arg0+1, file);

        /* use the rest of the args as they are */
        newargs = malloc(sizeof(*newargs) * (argc));
        if (!newargs) {
            free(arg0);
            goto exec_it;
        }
        newargs[0] = arg0;
        int arg = 2;
        for(; arg < argc; arg++)
            newargs[arg-1] = argv[arg];
        newargs[arg-1] = NULL;
    }

exec_it:
    if (execvp(file, newargs ? newargs : argv+1) < 0)
        die_errno(3, "%s: execv failed", argv[0]);

    if (newargs) {
        free(newargs[0]);
        free(newargs);
    }

    return 0;
}
示例#6
0
int main(int argc, char **argv)
{
	char *prog;
	struct commands *cmd;
	int devnull_fd;

	/*
	 * Always open file descriptors 0/1/2 to avoid clobbering files
	 * in die().  It also avoids not messing up when the pipes are
	 * dup'ed onto stdin/stdout/stderr in the child processes we spawn.
	 */
	devnull_fd = open("/dev/null", O_RDWR);
	while (devnull_fd >= 0 && devnull_fd <= 2)
		devnull_fd = dup(devnull_fd);
	if (devnull_fd == -1)
		die_errno("opening /dev/null failed");
	close (devnull_fd);

	/*
	 * Special hack to pretend to be a CVS server
	 */
	if (argc == 2 && !strcmp(argv[1], "cvs server"))
		argv--;

	/*
	 * We do not accept anything but "-c" followed by "cmd arg",
	 * where "cmd" is a very limited subset of git commands.
	 */
	else if (argc != 3 || strcmp(argv[1], "-c")) {
		if (chdir(COMMAND_DIR))
			die("Sorry, the interactive git-shell is not enabled");
		for (;;) {
			prog = readline("git> ");
			if (prog == NULL) {
				printf("\n");
				exit(0);
			} else if (!strcmp(prog, "quit") || !strcmp(prog, "logout") ||
				   !strcmp(prog, "exit")) {
				exit(0);
			} else if (!strcmp(prog, "")) {
			} else if (is_valid_cmd_name(prog)) {
				run(prog);
				add_history(prog);
			} else {
				printf("invalid command format '%s'\n", prog);
			}
			free(prog);
		};
	}

	prog = argv[2];
	if (!strncmp(prog, "git", 3) && isspace(prog[3]))
		/* Accept "git foo" as if the caller said "git-foo". */
		prog[3] = '-';

	for (cmd = cmd_list ; cmd->name ; cmd++) {
		int len = strlen(cmd->name);
		char *arg;
		if (strncmp(cmd->name, prog, len))
			continue;
		arg = NULL;
		switch (prog[len]) {
		case '\0':
			arg = NULL;
			break;
		case ' ':
			arg = prog + len + 1;
			break;
		default:
			continue;
		}
		exit(cmd->exec(cmd->name, arg));
	}

	if (chdir(COMMAND_DIR))
		die("unrecognized command '%s'", prog);

	if (is_valid_cmd_name(prog))
		execl(prog, prog, (char *) NULL);

	die("unrecognized command '%s'", prog);
}
示例#7
0
文件: clone.c 项目: dindinw/git
int cmd_clone(int argc, const char **argv, const char *prefix)
{
	int is_bundle = 0, is_local;
	struct stat buf;
	const char *repo_name, *repo, *work_tree, *git_dir;
	char *path, *dir;
	int dest_exists;
	const struct ref *refs, *remote_head;
	const struct ref *remote_head_points_at;
	const struct ref *our_head_points_at;
	struct ref *mapped_refs;
	const struct ref *ref;
	struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
	struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
	struct transport *transport = NULL;
	const char *src_ref_prefix = "refs/heads/";
	struct remote *remote;
	int err = 0, complete_refs_before_fetch = 1;
	int submodule_progress;

	struct refspec *refspec;
	const char *fetch_pattern;

	packet_trace_identity("clone");
	argc = parse_options(argc, argv, prefix, builtin_clone_options,
			     builtin_clone_usage, 0);

	if (argc > 2)
		usage_msg_opt(_("Too many arguments."),
			builtin_clone_usage, builtin_clone_options);

	if (argc == 0)
		usage_msg_opt(_("You must specify a repository to clone."),
			builtin_clone_usage, builtin_clone_options);

	if (option_depth || option_since || option_not.nr)
		deepen = 1;
	if (option_single_branch == -1)
		option_single_branch = deepen ? 1 : 0;

	if (option_mirror)
		option_bare = 1;

	if (option_bare) {
		if (option_origin)
			die(_("--bare and --origin %s options are incompatible."),
			    option_origin);
		if (real_git_dir)
			die(_("--bare and --separate-git-dir are incompatible."));
		option_no_checkout = 1;
	}

	if (!option_origin)
		option_origin = "origin";

	repo_name = argv[0];

	path = get_repo_path(repo_name, &is_bundle);
	if (path)
		repo = xstrdup(absolute_path(repo_name));
	else if (!strchr(repo_name, ':'))
		die(_("repository '%s' does not exist"), repo_name);
	else
		repo = repo_name;

	/* no need to be strict, transport_set_option() will validate it again */
	if (option_depth && atoi(option_depth) < 1)
		die(_("depth %s is not a positive number"), option_depth);

	if (argc == 2)
		dir = xstrdup(argv[1]);
	else
		dir = guess_dir_name(repo_name, is_bundle, option_bare);
	strip_trailing_slashes(dir);

	dest_exists = !stat(dir, &buf);
	if (dest_exists && !is_empty_dir(dir))
		die(_("destination path '%s' already exists and is not "
			"an empty directory."), dir);

	strbuf_addf(&reflog_msg, "clone: from %s", repo);

	if (option_bare)
		work_tree = NULL;
	else {
		work_tree = getenv("GIT_WORK_TREE");
		if (work_tree && !stat(work_tree, &buf))
			die(_("working tree '%s' already exists."), work_tree);
	}

	if (option_bare || work_tree)
		git_dir = xstrdup(dir);
	else {
		work_tree = dir;
		git_dir = mkpathdup("%s/.git", dir);
	}

	atexit(remove_junk);
	sigchain_push_common(remove_junk_on_signal);

	if (!option_bare) {
		if (safe_create_leading_directories_const(work_tree) < 0)
			die_errno(_("could not create leading directories of '%s'"),
				  work_tree);
		if (!dest_exists && mkdir(work_tree, 0777))
			die_errno(_("could not create work tree dir '%s'"),
				  work_tree);
		junk_work_tree = work_tree;
		set_git_work_tree(work_tree);
	}

	junk_git_dir = real_git_dir ? real_git_dir : git_dir;
	if (safe_create_leading_directories_const(git_dir) < 0)
		die(_("could not create leading directories of '%s'"), git_dir);

	if (0 <= option_verbosity) {
		if (option_bare)
			fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
		else
			fprintf(stderr, _("Cloning into '%s'...\n"), dir);
	}

	if (option_recursive) {
		if (option_required_reference.nr &&
		    option_optional_reference.nr)
			die(_("clone --recursive is not compatible with "
			      "both --reference and --reference-if-able"));
		else if (option_required_reference.nr) {
			string_list_append(&option_config,
				"submodule.alternateLocation=superproject");
			string_list_append(&option_config,
				"submodule.alternateErrorStrategy=die");
		} else if (option_optional_reference.nr) {
			string_list_append(&option_config,
				"submodule.alternateLocation=superproject");
			string_list_append(&option_config,
				"submodule.alternateErrorStrategy=info");
		}
	}

	init_db(git_dir, real_git_dir, option_template, INIT_DB_QUIET);

	if (real_git_dir)
		git_dir = real_git_dir;

	write_config(&option_config);

	git_config(git_default_config, NULL);

	if (option_bare) {
		if (option_mirror)
			src_ref_prefix = "refs/";
		strbuf_addstr(&branch_top, src_ref_prefix);

		git_config_set("core.bare", "true");
	} else {
		strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
	}

	strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
	strbuf_addf(&key, "remote.%s.url", option_origin);
	git_config_set(key.buf, repo);
	strbuf_reset(&key);

	if (option_required_reference.nr || option_optional_reference.nr)
		setup_reference();

	fetch_pattern = value.buf;
	refspec = parse_fetch_refspec(1, &fetch_pattern);

	strbuf_reset(&value);

	remote = remote_get(option_origin);
	transport = transport_get(remote, remote->url[0]);
	transport_set_verbosity(transport, option_verbosity, option_progress);
	transport->family = family;

	path = get_repo_path(remote->url[0], &is_bundle);
	is_local = option_local != 0 && path && !is_bundle;
	if (is_local) {
		if (option_depth)
			warning(_("--depth is ignored in local clones; use file:// instead."));
		if (option_since)
			warning(_("--shallow-since is ignored in local clones; use file:// instead."));
		if (option_not.nr)
			warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
		if (!access(mkpath("%s/shallow", path), F_OK)) {
			if (option_local > 0)
				warning(_("source repository is shallow, ignoring --local"));
			is_local = 0;
		}
	}
	if (option_local > 0 && !is_local)
		warning(_("--local is ignored"));
	transport->cloning = 1;

	if (!transport->get_refs_list || (!is_local && !transport->fetch))
		die(_("Don't know how to clone %s"), transport->url);

	transport_set_option(transport, TRANS_OPT_KEEP, "yes");

	if (option_depth)
		transport_set_option(transport, TRANS_OPT_DEPTH,
				     option_depth);
	if (option_since)
		transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
				     option_since);
	if (option_not.nr)
		transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
				     (const char *)&option_not);
	if (option_single_branch)
		transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");

	if (option_upload_pack)
		transport_set_option(transport, TRANS_OPT_UPLOADPACK,
				     option_upload_pack);

	if (transport->smart_options && !deepen)
		transport->smart_options->check_self_contained_and_connected = 1;

	refs = transport_get_remote_refs(transport);

	if (refs) {
		mapped_refs = wanted_peer_refs(refs, refspec);
		/*
		 * transport_get_remote_refs() may return refs with null sha-1
		 * in mapped_refs (see struct transport->get_refs_list
		 * comment). In that case we need fetch it early because
		 * remote_head code below relies on it.
		 *
		 * for normal clones, transport_get_remote_refs() should
		 * return reliable ref set, we can delay cloning until after
		 * remote HEAD check.
		 */
		for (ref = refs; ref; ref = ref->next)
			if (is_null_oid(&ref->old_oid)) {
				complete_refs_before_fetch = 0;
				break;
			}

		if (!is_local && !complete_refs_before_fetch)
			transport_fetch_refs(transport, mapped_refs);

		remote_head = find_ref_by_name(refs, "HEAD");
		remote_head_points_at =
			guess_remote_head(remote_head, mapped_refs, 0);

		if (option_branch) {
			our_head_points_at =
				find_remote_branch(mapped_refs, option_branch);

			if (!our_head_points_at)
				die(_("Remote branch %s not found in upstream %s"),
				    option_branch, option_origin);
		}
		else
			our_head_points_at = remote_head_points_at;
	}
	else {
		if (option_branch)
			die(_("Remote branch %s not found in upstream %s"),
					option_branch, option_origin);

		warning(_("You appear to have cloned an empty repository."));
		mapped_refs = NULL;
		our_head_points_at = NULL;
		remote_head_points_at = NULL;
		remote_head = NULL;
		option_no_checkout = 1;
		if (!option_bare)
			install_branch_config(0, "master", option_origin,
					      "refs/heads/master");
	}

	write_refspec_config(src_ref_prefix, our_head_points_at,
			remote_head_points_at, &branch_top);

	if (is_local)
		clone_local(path, git_dir);
	else if (refs && complete_refs_before_fetch)
		transport_fetch_refs(transport, mapped_refs);

	update_remote_refs(refs, mapped_refs, remote_head_points_at,
			   branch_top.buf, reflog_msg.buf, transport, !is_local);

	update_head(our_head_points_at, remote_head, reflog_msg.buf);

	/*
	 * We want to show progress for recursive submodule clones iff
	 * we did so for the main clone. But only the transport knows
	 * the final decision for this flag, so we need to rescue the value
	 * before we free the transport.
	 */
	submodule_progress = transport->progress;

	transport_unlock_pack(transport);
	transport_disconnect(transport);

	if (option_dissociate) {
		close_all_packs();
		dissociate_from_references();
	}

	junk_mode = JUNK_LEAVE_REPO;
	err = checkout(submodule_progress);

	strbuf_release(&reflog_msg);
	strbuf_release(&branch_top);
	strbuf_release(&key);
	strbuf_release(&value);
	junk_mode = JUNK_LEAVE_ALL;

	free(refspec);
	return err;
}
示例#8
0
int start_command(struct child_process *cmd)
{
	int need_in, need_out, need_err;
	int fdin[2], fdout[2], fderr[2];
	int failed_errno = failed_errno;

	/*
	 * In case of errors we must keep the promise to close FDs
	 * that have been passed in via ->in and ->out.
	 */

	need_in = !cmd->no_stdin && cmd->in < 0;
	if (need_in) {
		if (pipe(fdin) < 0) {
			failed_errno = errno;
			if (cmd->out > 0)
				close(cmd->out);
			goto fail_pipe;
		}
		cmd->in = fdin[1];
	}

	need_out = !cmd->no_stdout
		&& !cmd->stdout_to_stderr
		&& cmd->out < 0;
	if (need_out) {
		if (pipe(fdout) < 0) {
			failed_errno = errno;
			if (need_in)
				close_pair(fdin);
			else if (cmd->in)
				close(cmd->in);
			goto fail_pipe;
		}
		cmd->out = fdout[0];
	}

	need_err = !cmd->no_stderr && cmd->err < 0;
	if (need_err) {
		if (pipe(fderr) < 0) {
			failed_errno = errno;
			if (need_in)
				close_pair(fdin);
			else if (cmd->in)
				close(cmd->in);
			if (need_out)
				close_pair(fdout);
			else if (cmd->out)
				close(cmd->out);
fail_pipe:
			error("cannot create pipe for %s: %s",
				cmd->argv[0], strerror(failed_errno));
			errno = failed_errno;
			return -1;
		}
		cmd->err = fderr[0];
	}

	trace_argv_printf(cmd->argv, "trace: run_command:");

#ifndef WIN32
{
	int notify_pipe[2];
	if (pipe(notify_pipe))
		notify_pipe[0] = notify_pipe[1] = -1;

	fflush(NULL);
	cmd->pid = fork();
	if (!cmd->pid) {
		/*
		 * Redirect the channel to write syscall error messages to
		 * before redirecting the process's stderr so that all die()
		 * in subsequent call paths use the parent's stderr.
		 */
		if (cmd->no_stderr || need_err) {
			child_err = dup(2);
			set_cloexec(child_err);
		}
		set_die_routine(die_child);

		close(notify_pipe[0]);
		set_cloexec(notify_pipe[1]);
		child_notifier = notify_pipe[1];
		atexit(notify_parent);

		if (cmd->no_stdin)
			dup_devnull(0);
		else if (need_in) {
			dup2(fdin[0], 0);
			close_pair(fdin);
		} else if (cmd->in) {
			dup2(cmd->in, 0);
			close(cmd->in);
		}

		if (cmd->no_stderr)
			dup_devnull(2);
		else if (need_err) {
			dup2(fderr[1], 2);
			close_pair(fderr);
		} else if (cmd->err > 1) {
			dup2(cmd->err, 2);
			close(cmd->err);
		}

		if (cmd->no_stdout)
			dup_devnull(1);
		else if (cmd->stdout_to_stderr)
			dup2(2, 1);
		else if (need_out) {
			dup2(fdout[1], 1);
			close_pair(fdout);
		} else if (cmd->out > 1) {
			dup2(cmd->out, 1);
			close(cmd->out);
		}

		if (cmd->dir && chdir(cmd->dir))
			die_errno("exec '%s': cd to '%s' failed", cmd->argv[0],
			    cmd->dir);
		if (cmd->env) {
			for (; *cmd->env; cmd->env++) {
				if (strchr(*cmd->env, '='))
					putenv((char *)*cmd->env);
				else
					unsetenv(*cmd->env);
			}
		}
		if (cmd->preexec_cb) {
			/*
			 * We cannot predict what the pre-exec callback does.
			 * Forgo parent notification.
			 */
			close(child_notifier);
			child_notifier = -1;

			cmd->preexec_cb();
		}
		if (cmd->git_cmd) {
			execv_git_cmd(cmd->argv);
		} else if (cmd->use_shell) {
			execv_shell_cmd(cmd->argv);
		} else {
			execvp(cmd->argv[0], (char *const*) cmd->argv);
		}
		/*
		 * Do not check for cmd->silent_exec_failure; the parent
		 * process will check it when it sees this exit code.
		 */
		if (errno == ENOENT)
			exit(127);
		else
			die_errno("cannot exec '%s'", cmd->argv[0]);
	}
	if (cmd->pid < 0)
		error("cannot fork() for %s: %s", cmd->argv[0],
			strerror(failed_errno = errno));

	/*
	 * Wait for child's execvp. If the execvp succeeds (or if fork()
	 * failed), EOF is seen immediately by the parent. Otherwise, the
	 * child process sends a single byte.
	 * Note that use of this infrastructure is completely advisory,
	 * therefore, we keep error checks minimal.
	 */
	close(notify_pipe[1]);
	if (read(notify_pipe[0], &notify_pipe[1], 1) == 1) {
		/*
		 * At this point we know that fork() succeeded, but execvp()
		 * failed. Errors have been reported to our stderr.
		 */
		wait_or_whine(cmd->pid, cmd->argv[0],
			      cmd->silent_exec_failure);
		failed_errno = errno;
		cmd->pid = -1;
	}
	close(notify_pipe[0]);
}
#else
{
	int fhin = 0, fhout = 1, fherr = 2;
	const char **sargv = cmd->argv;
	char **env = environ;

	if (cmd->no_stdin)
		fhin = open("/dev/null", O_RDWR);
	else if (need_in)
		fhin = dup(fdin[0]);
	else if (cmd->in)
		fhin = dup(cmd->in);

	if (cmd->no_stderr)
		fherr = open("/dev/null", O_RDWR);
	else if (need_err)
		fherr = dup(fderr[1]);
	else if (cmd->err > 2)
		fherr = dup(cmd->err);

	if (cmd->no_stdout)
		fhout = open("/dev/null", O_RDWR);
	else if (cmd->stdout_to_stderr)
		fhout = dup(fherr);
	else if (need_out)
		fhout = dup(fdout[1]);
	else if (cmd->out > 1)
		fhout = dup(cmd->out);

	if (cmd->env)
		env = make_augmented_environ(cmd->env);

	if (cmd->git_cmd) {
		cmd->argv = prepare_git_cmd(cmd->argv);
	} else if (cmd->use_shell) {
		cmd->argv = prepare_shell_cmd(cmd->argv);
	}

	cmd->pid = mingw_spawnvpe(cmd->argv[0], cmd->argv, env, cmd->dir,
				  fhin, fhout, fherr);
	failed_errno = errno;
	if (cmd->pid < 0 && (!cmd->silent_exec_failure || errno != ENOENT))
		error("cannot spawn %s: %s", cmd->argv[0], strerror(errno));

	if (cmd->env)
		free_environ(env);
	if (cmd->git_cmd)
		free(cmd->argv);

	cmd->argv = sargv;
	if (fhin != 0)
		close(fhin);
	if (fhout != 1)
		close(fhout);
	if (fherr != 2)
		close(fherr);
}
#endif

	if (cmd->pid < 0) {
		if (need_in)
			close_pair(fdin);
		else if (cmd->in)
			close(cmd->in);
		if (need_out)
			close_pair(fdout);
		else if (cmd->out)
			close(cmd->out);
		if (need_err)
			close_pair(fderr);
		else if (cmd->err)
			close(cmd->err);
		errno = failed_errno;
		return -1;
	}

	if (need_in)
		close(fdin[0]);
	else if (cmd->in)
		close(cmd->in);

	if (need_out)
		close(fdout[1]);
	else if (cmd->out)
		close(cmd->out);

	if (need_err)
		close(fderr[1]);
	else if (cmd->err)
		close(cmd->err);

	return 0;
}
示例#9
0
文件: mv.c 项目: AMC06/git
int cmd_mv(int argc, const char **argv, const char *prefix)
{
	int i, newfd, gitmodules_modified = 0;
	int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
	struct option builtin_mv_options[] = {
		OPT__VERBOSE(&verbose, N_("be verbose")),
		OPT__DRY_RUN(&show_only, N_("dry run")),
		OPT__FORCE(&force, N_("force move/rename even if target exists")),
		OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
		OPT_END(),
	};
	const char **source, **destination, **dest_path, **submodule_gitfile;
	enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
	struct stat st;
	struct string_list src_for_dst = STRING_LIST_INIT_NODUP;

	gitmodules_config();
	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_mv_options,
			     builtin_mv_usage, 0);
	if (--argc < 1)
		usage_with_options(builtin_mv_usage, builtin_mv_options);

	newfd = hold_locked_index(&lock_file, 1);
	if (read_cache() < 0)
		die(_("index file corrupt"));

	source = internal_copy_pathspec(prefix, argv, argc, 0);
	modes = xcalloc(argc, sizeof(enum update_mode));
	/*
	 * Keep trailing slash, needed to let
	 * "git mv file no-such-dir/" error out.
	 */
	dest_path = internal_copy_pathspec(prefix, argv + argc, 1,
					   KEEP_TRAILING_SLASH);
	submodule_gitfile = xcalloc(argc, sizeof(char *));

	if (dest_path[0][0] == '\0')
		/* special case: "." was normalized to "" */
		destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	else if (!lstat(dest_path[0], &st) &&
			S_ISDIR(st.st_mode)) {
		dest_path[0] = add_slash(dest_path[0]);
		destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	} else {
		if (argc != 1)
			die("destination '%s' is not a directory", dest_path[0]);
		destination = dest_path;
	}

	/* Checking */
	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		int length, src_is_dir;
		const char *bad = NULL;

		if (show_only)
			printf(_("Checking rename of '%s' to '%s'\n"), src, dst);

		length = strlen(src);
		if (lstat(src, &st) < 0)
			bad = _("bad source");
		else if (!strncmp(src, dst, length) &&
				(dst[length] == 0 || dst[length] == '/')) {
			bad = _("can not move directory into itself");
		} else if ((src_is_dir = S_ISDIR(st.st_mode))
				&& lstat(dst, &st) == 0)
			bad = _("cannot move directory over file");
		else if (src_is_dir) {
			int first = cache_name_pos(src, length);
			if (first >= 0) {
				struct strbuf submodule_dotgit = STRBUF_INIT;
				if (!S_ISGITLINK(active_cache[first]->ce_mode))
					die (_("Huh? Directory %s is in index and no submodule?"), src);
				if (!is_staging_gitmodules_ok())
					die (_("Please, stage your changes to .gitmodules or stash them to proceed"));
				strbuf_addf(&submodule_dotgit, "%s/.git", src);
				submodule_gitfile[i] = read_gitfile(submodule_dotgit.buf);
				if (submodule_gitfile[i])
					submodule_gitfile[i] = xstrdup(submodule_gitfile[i]);
				else
					submodule_gitfile[i] = SUBMODULE_WITH_GITDIR;
				strbuf_release(&submodule_dotgit);
			} else {
				const char *src_w_slash = add_slash(src);
				int last, len_w_slash = length + 1;

				modes[i] = WORKING_DIRECTORY;

				first = cache_name_pos(src_w_slash, len_w_slash);
				if (first >= 0)
					die (_("Huh? %.*s is in index?"),
							len_w_slash, src_w_slash);

				first = -1 - first;
				for (last = first; last < active_nr; last++) {
					const char *path = active_cache[last]->name;
					if (strncmp(path, src_w_slash, len_w_slash))
						break;
				}
				free((char *)src_w_slash);

				if (last - first < 1)
					bad = _("source directory is empty");
				else {
					int j, dst_len;

					if (last - first > 0) {
						source = xrealloc(source,
								(argc + last - first)
								* sizeof(char *));
						destination = xrealloc(destination,
								(argc + last - first)
								* sizeof(char *));
						modes = xrealloc(modes,
								(argc + last - first)
								* sizeof(enum update_mode));
						submodule_gitfile = xrealloc(submodule_gitfile,
								(argc + last - first)
								* sizeof(char *));
					}

					dst = add_slash(dst);
					dst_len = strlen(dst);

					for (j = 0; j < last - first; j++) {
						const char *path =
							active_cache[first + j]->name;
						source[argc + j] = path;
						destination[argc + j] =
							prefix_path(dst, dst_len,
								path + length + 1);
						modes[argc + j] = INDEX;
						submodule_gitfile[argc + j] = NULL;
					}
					argc += last - first;
				}
			}
		} else if (cache_name_pos(src, length) < 0)
			bad = _("not under version control");
		else if (lstat(dst, &st) == 0) {
			bad = _("destination exists");
			if (force) {
				/*
				 * only files can overwrite each other:
				 * check both source and destination
				 */
				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
					if (verbose)
						warning(_("overwriting '%s'"), dst);
					bad = NULL;
				} else
					bad = _("Cannot overwrite");
			}
		} else if (string_list_has_string(&src_for_dst, dst))
			bad = _("multiple sources for the same target");
		else if (is_dir_sep(dst[strlen(dst) - 1]))
			bad = _("destination directory does not exist");
		else
			string_list_insert(&src_for_dst, dst);

		if (bad) {
			if (ignore_errors) {
				if (--argc > 0) {
					memmove(source + i, source + i + 1,
						(argc - i) * sizeof(char *));
					memmove(destination + i,
						destination + i + 1,
						(argc - i) * sizeof(char *));
					memmove(modes + i, modes + i + 1,
						(argc - i) * sizeof(enum update_mode));
					memmove(submodule_gitfile + i,
						submodule_gitfile + i + 1,
						(argc - i) * sizeof(char *));
					i--;
				}
			} else
				die (_("%s, source=%s, destination=%s"),
				     bad, src, dst);
		}
	}

	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		enum update_mode mode = modes[i];
		int pos;
		if (show_only || verbose)
			printf(_("Renaming %s to %s\n"), src, dst);
		if (!show_only && mode != INDEX) {
			if (rename(src, dst) < 0 && !ignore_errors)
				die_errno (_("renaming '%s' failed"), src);
			if (submodule_gitfile[i]) {
				if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
					connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
				if (!update_path_in_gitmodules(src, dst))
					gitmodules_modified = 1;
			}
		}

		if (mode == WORKING_DIRECTORY)
			continue;

		pos = cache_name_pos(src, strlen(src));
		assert(pos >= 0);
		if (!show_only)
			rename_cache_entry_at(pos, dst);
	}

	if (gitmodules_modified)
		stage_updated_gitmodules();

	if (active_cache_changed) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(&lock_file))
			die(_("Unable to write new index file"));
	}

	return 0;
}
示例#10
0
文件: mv.c 项目: KarthikNayak/git
int cmd_mv(int argc, const char **argv, const char *prefix)
{
	int i, flags, gitmodules_modified = 0;
	int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
	struct option builtin_mv_options[] = {
		OPT__VERBOSE(&verbose, N_("be verbose")),
		OPT__DRY_RUN(&show_only, N_("dry run")),
		OPT__FORCE(&force, N_("force move/rename even if target exists")),
		OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
		OPT_END(),
	};
	const char **source, **destination, **dest_path, **submodule_gitfile;
	enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
	struct stat st;
	struct string_list src_for_dst = STRING_LIST_INIT_NODUP;

	gitmodules_config();
	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_mv_options,
			     builtin_mv_usage, 0);
	if (--argc < 1)
		usage_with_options(builtin_mv_usage, builtin_mv_options);

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
	if (read_cache() < 0)
		die(_("index file corrupt"));

	source = internal_prefix_pathspec(prefix, argv, argc, 0);
	modes = xcalloc(argc, sizeof(enum update_mode));
	/*
	 * Keep trailing slash, needed to let
	 * "git mv file no-such-dir/" error out, except in the case
	 * "git mv directory no-such-dir/".
	 */
	flags = KEEP_TRAILING_SLASH;
	if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
		flags = 0;
	dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags);
	submodule_gitfile = xcalloc(argc, sizeof(char *));

	if (dest_path[0][0] == '\0')
		/* special case: "." was normalized to "" */
		destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	else if (!lstat(dest_path[0], &st) &&
			S_ISDIR(st.st_mode)) {
		dest_path[0] = add_slash(dest_path[0]);
		destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	} else {
		if (argc != 1)
			die(_("destination '%s' is not a directory"), dest_path[0]);
		destination = dest_path;
	}

	/* Checking */
	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		int length, src_is_dir;
		const char *bad = NULL;

		if (show_only)
			printf(_("Checking rename of '%s' to '%s'\n"), src, dst);

		length = strlen(src);
		if (lstat(src, &st) < 0)
			bad = _("bad source");
		else if (!strncmp(src, dst, length) &&
				(dst[length] == 0 || dst[length] == '/')) {
			bad = _("can not move directory into itself");
		} else if ((src_is_dir = S_ISDIR(st.st_mode))
				&& lstat(dst, &st) == 0)
			bad = _("cannot move directory over file");
		else if (src_is_dir) {
			int first = cache_name_pos(src, length), last;

			if (first >= 0)
				prepare_move_submodule(src, first,
						       submodule_gitfile + i);
			else if (index_range_of_same_dir(src, length,
							 &first, &last) < 1)
				bad = _("source directory is empty");
			else { /* last - first >= 1 */
				int j, dst_len, n;

				modes[i] = WORKING_DIRECTORY;
				n = argc + last - first;
				REALLOC_ARRAY(source, n);
				REALLOC_ARRAY(destination, n);
				REALLOC_ARRAY(modes, n);
				REALLOC_ARRAY(submodule_gitfile, n);

				dst = add_slash(dst);
				dst_len = strlen(dst);

				for (j = 0; j < last - first; j++) {
					const char *path = active_cache[first + j]->name;
					source[argc + j] = path;
					destination[argc + j] =
						prefix_path(dst, dst_len, path + length + 1);
					modes[argc + j] = INDEX;
					submodule_gitfile[argc + j] = NULL;
				}
				argc += last - first;
			}
		} else if (cache_name_pos(src, length) < 0)
			bad = _("not under version control");
		else if (lstat(dst, &st) == 0 &&
			 (!ignore_case || strcasecmp(src, dst))) {
			bad = _("destination exists");
			if (force) {
				/*
				 * only files can overwrite each other:
				 * check both source and destination
				 */
				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
					if (verbose)
						warning(_("overwriting '%s'"), dst);
					bad = NULL;
				} else
					bad = _("Cannot overwrite");
			}
		} else if (string_list_has_string(&src_for_dst, dst))
			bad = _("multiple sources for the same target");
		else if (is_dir_sep(dst[strlen(dst) - 1]))
			bad = _("destination directory does not exist");
		else
			string_list_insert(&src_for_dst, dst);

		if (!bad)
			continue;
		if (!ignore_errors)
			die(_("%s, source=%s, destination=%s"),
			     bad, src, dst);
		if (--argc > 0) {
			int n = argc - i;
			memmove(source + i, source + i + 1,
				n * sizeof(char *));
			memmove(destination + i, destination + i + 1,
				n * sizeof(char *));
			memmove(modes + i, modes + i + 1,
				n * sizeof(enum update_mode));
			memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
				n * sizeof(char *));
			i--;
		}
	}

	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		enum update_mode mode = modes[i];
		int pos;
		if (show_only || verbose)
			printf(_("Renaming %s to %s\n"), src, dst);
		if (show_only)
			continue;
		if (mode != INDEX && rename(src, dst) < 0) {
			if (ignore_errors)
				continue;
			die_errno(_("renaming '%s' failed"), src);
		}
		if (submodule_gitfile[i]) {
			if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
				connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
			if (!update_path_in_gitmodules(src, dst))
				gitmodules_modified = 1;
		}

		if (mode == WORKING_DIRECTORY)
			continue;

		pos = cache_name_pos(src, strlen(src));
		assert(pos >= 0);
		if (!show_only)
			rename_cache_entry_at(pos, dst);
	}

	if (gitmodules_modified)
		stage_updated_gitmodules();

	if (active_cache_changed &&
	    write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		die(_("Unable to write new index file"));

	return 0;
}
示例#11
0
文件: git.c 项目: SRabbelier/git
static int handle_alias(int *argcp, const char ***argv)
{
	int envchanged = 0, ret = 0, saved_errno = errno;
	const char *subdir;
	int count, option_count;
	const char **new_argv;
	const char *alias_command;
	char *alias_string;
	int unused_nongit;

	subdir = setup_git_directory_gently(&unused_nongit);

	alias_command = (*argv)[0];
	alias_string = alias_lookup(alias_command);
	if (alias_string) {
		if (alias_string[0] == '!') {
			commit_pager_choice();
			if (*argcp > 1) {
				struct strbuf buf;

				strbuf_init(&buf, PATH_MAX);
				strbuf_addstr(&buf, alias_string);
				sq_quote_argv(&buf, (*argv) + 1, PATH_MAX);
				free(alias_string);
				alias_string = buf.buf;
			}
			trace_printf("trace: alias to shell cmd: %s => %s\n",
				     alias_command, alias_string + 1);
			ret = system(alias_string + 1);
			if (ret >= 0 && WIFEXITED(ret) &&
			    WEXITSTATUS(ret) != 127)
				exit(WEXITSTATUS(ret));
			die("Failed to run '%s' when expanding alias '%s'",
			    alias_string + 1, alias_command);
		}
		count = split_cmdline(alias_string, &new_argv);
		if (count < 0)
			die("Bad alias.%s string: %s", alias_command,
			    split_cmdline_strerror(count));
		option_count = handle_options(&new_argv, &count, &envchanged);
		if (envchanged)
			die("alias '%s' changes environment variables\n"
				 "You can use '!git' in the alias to do this.",
				 alias_command);
		memmove(new_argv - option_count, new_argv,
				count * sizeof(char *));
		new_argv -= option_count;

		if (count < 1)
			die("empty alias for %s", alias_command);

		if (!strcmp(alias_command, new_argv[0]))
			die("recursive alias: %s", alias_command);

		trace_argv_printf(new_argv,
				  "trace: alias expansion: %s =>",
				  alias_command);

		new_argv = xrealloc(new_argv, sizeof(char *) *
				    (count + *argcp));
		/* insert after command name */
		memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);

		*argv = new_argv;
		*argcp += count - 1;

		ret = 1;
	}

	if (subdir && chdir(subdir))
		die_errno("Cannot change to '%s'", subdir);

	errno = saved_errno;

	return ret;
}
示例#12
0
文件: git.c 项目: ovmine/git
static int handle_options(const char ***argv, int *argc, int *envchanged)
{
	const char **orig_argv = *argv;

	while (*argc > 0) {
		const char *cmd = (*argv)[0];
		if (cmd[0] != '-')
			break;

		/*
		 * For legacy reasons, the "version" and "help"
		 * commands can be written with "--" prepended
		 * to make them look like flags.
		 */
		if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
			break;

		/*
		 * Check remaining flags.
		 */
		if (skip_prefix(cmd, "--exec-path", &cmd)) {
			if (*cmd == '=')
				git_set_exec_path(cmd + 1);
			else {
				puts(git_exec_path());
				exit(0);
			}
		} else if (!strcmp(cmd, "--html-path")) {
			puts(system_path(GIT_HTML_PATH));
			exit(0);
		} else if (!strcmp(cmd, "--man-path")) {
			puts(system_path(GIT_MAN_PATH));
			exit(0);
		} else if (!strcmp(cmd, "--info-path")) {
			puts(system_path(GIT_INFO_PATH));
			exit(0);
		} else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
			use_pager = 1;
		} else if (!strcmp(cmd, "-P") || !strcmp(cmd, "--no-pager")) {
			use_pager = 0;
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--no-replace-objects")) {
			check_replace_refs = 0;
			setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--git-dir")) {
			if (*argc < 2) {
				fprintf(stderr, _("no directory given for --git-dir\n" ));
				usage(git_usage_string);
			}
			setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
		} else if (skip_prefix(cmd, "--git-dir=", &cmd)) {
			setenv(GIT_DIR_ENVIRONMENT, cmd, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--namespace")) {
			if (*argc < 2) {
				fprintf(stderr, _("no namespace given for --namespace\n" ));
				usage(git_usage_string);
			}
			setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
		} else if (skip_prefix(cmd, "--namespace=", &cmd)) {
			setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--work-tree")) {
			if (*argc < 2) {
				fprintf(stderr, _("no directory given for --work-tree\n" ));
				usage(git_usage_string);
			}
			setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
		} else if (skip_prefix(cmd, "--work-tree=", &cmd)) {
			setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--super-prefix")) {
			if (*argc < 2) {
				fprintf(stderr, _("no prefix given for --super-prefix\n" ));
				usage(git_usage_string);
			}
			setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
		} else if (skip_prefix(cmd, "--super-prefix=", &cmd)) {
			setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--bare")) {
			char *cwd = xgetcwd();
			is_bare_repository_cfg = 1;
			setenv(GIT_DIR_ENVIRONMENT, cwd, 0);
			free(cwd);
			setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "-c")) {
			if (*argc < 2) {
				fprintf(stderr, _("-c expects a configuration string\n" ));
				usage(git_usage_string);
			}
			git_config_push_parameter((*argv)[1]);
			(*argv)++;
			(*argc)--;
		} else if (!strcmp(cmd, "--literal-pathspecs")) {
			setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--no-literal-pathspecs")) {
			setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--glob-pathspecs")) {
			setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--noglob-pathspecs")) {
			setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--icase-pathspecs")) {
			setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--no-optional-locks")) {
			setenv(GIT_OPTIONAL_LOCKS_ENVIRONMENT, "0", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--shallow-file")) {
			(*argv)++;
			(*argc)--;
			set_alternate_shallow_file((*argv)[0], 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "-C")) {
			if (*argc < 2) {
				fprintf(stderr, _("no directory given for -C\n" ));
				usage(git_usage_string);
			}
			if ((*argv)[1][0]) {
				if (chdir((*argv)[1]))
					die_errno("cannot change to '%s'", (*argv)[1]);
				if (envchanged)
					*envchanged = 1;
			}
			(*argv)++;
			(*argc)--;
		} else if (!strcmp(cmd, "--list-builtins")) {
			list_builtins(0, '\n');
			exit(0);
		} else if (!strcmp(cmd, "--list-parseopt-builtins")) {
			list_builtins(NO_PARSEOPT, ' ');
			exit(0);
		} else {
			fprintf(stderr, _("unknown option: %s\n"), cmd);
			usage(git_usage_string);
		}

		(*argv)++;
		(*argc)--;
	}
	return (*argv) - orig_argv;
}
示例#13
0
文件: git.c 项目: ovmine/git
static int handle_alias(int *argcp, const char ***argv)
{
	int envchanged = 0, ret = 0, saved_errno = errno;
	int count, option_count;
	const char **new_argv;
	const char *alias_command;
	char *alias_string;

	alias_command = (*argv)[0];
	alias_string = alias_lookup(alias_command);
	if (alias_string) {
		if (alias_string[0] == '!') {
			struct child_process child = CHILD_PROCESS_INIT;
			int nongit_ok;

			/* Aliases expect GIT_PREFIX, GIT_DIR etc to be set */
			setup_git_directory_gently(&nongit_ok);

			commit_pager_choice();

			child.use_shell = 1;
			argv_array_push(&child.args, alias_string + 1);
			argv_array_pushv(&child.args, (*argv) + 1);

			ret = run_command(&child);
			if (ret >= 0)   /* normal exit */
				exit(ret);

			die_errno("while expanding alias '%s': '%s'",
			    alias_command, alias_string + 1);
		}
		count = split_cmdline(alias_string, &new_argv);
		if (count < 0)
			die("Bad alias.%s string: %s", alias_command,
			    split_cmdline_strerror(count));
		option_count = handle_options(&new_argv, &count, &envchanged);
		if (envchanged)
			die("alias '%s' changes environment variables.\n"
				 "You can use '!git' in the alias to do this",
				 alias_command);
		memmove(new_argv - option_count, new_argv,
				count * sizeof(char *));
		new_argv -= option_count;

		if (count < 1)
			die("empty alias for %s", alias_command);

		if (!strcmp(alias_command, new_argv[0]))
			die("recursive alias: %s", alias_command);

		trace_argv_printf(new_argv,
				  "trace: alias expansion: %s =>",
				  alias_command);

		REALLOC_ARRAY(new_argv, count + *argcp);
		/* insert after command name */
		memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);

		*argv = new_argv;
		*argcp += count - 1;

		ret = 1;
	}

	errno = saved_errno;

	return ret;
}
示例#14
0
文件: log.c 项目: carey94tt/git
int cmd_format_patch(int argc, const char **argv, const char *prefix)
{
	struct commit *commit;
	struct commit **list = NULL;
	struct rev_info rev;
	struct setup_revision_opt s_r_opt;
	int nr = 0, total, i;
	int use_stdout = 0;
	int start_number = -1;
	int numbered_files = 0;		/* _just_ numbers */
	int ignore_if_in_upstream = 0;
	int cover_letter = 0;
	int boundary_count = 0;
	int no_binary_diff = 0;
	struct commit *origin = NULL, *head = NULL;
	const char *in_reply_to = NULL;
	struct patch_ids ids;
	char *add_signoff = NULL;
	struct strbuf buf = STRBUF_INIT;
	int use_patch_format = 0;
	int quiet = 0;
	char *branch_name = NULL;
	const struct option builtin_format_patch_options[] = {
		{ OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
			    N_("use [PATCH n/m] even with a single patch"),
			    PARSE_OPT_NOARG, numbered_callback },
		{ OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL,
			    N_("use [PATCH] even with multiple patches"),
			    PARSE_OPT_NOARG, no_numbered_callback },
		OPT_BOOLEAN('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
		OPT_BOOLEAN(0, "stdout", &use_stdout,
			    N_("print patches to standard out")),
		OPT_BOOLEAN(0, "cover-letter", &cover_letter,
			    N_("generate a cover letter")),
		OPT_BOOLEAN(0, "numbered-files", &numbered_files,
			    N_("use simple number sequence for output file names")),
		OPT_STRING(0, "suffix", &fmt_patch_suffix, N_("sfx"),
			    N_("use <sfx> instead of '.patch'")),
		OPT_INTEGER(0, "start-number", &start_number,
			    N_("start numbering patches at <n> instead of 1")),
		{ OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
			    N_("Use [<prefix>] instead of [PATCH]"),
			    PARSE_OPT_NONEG, subject_prefix_callback },
		{ OPTION_CALLBACK, 'o', "output-directory", &output_directory,
			    N_("dir"), N_("store resulting files in <dir>"),
			    PARSE_OPT_NONEG, output_directory_callback },
		{ OPTION_CALLBACK, 'k', "keep-subject", &rev, NULL,
			    N_("don't strip/add [PATCH]"),
			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback },
		OPT_BOOLEAN(0, "no-binary", &no_binary_diff,
			    N_("don't output binary diffs")),
		OPT_BOOLEAN(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
			    N_("don't include a patch matching a commit upstream")),
		{ OPTION_BOOLEAN, 'p', "no-stat", &use_patch_format, NULL,
		  N_("show patch format instead of default (patch + stat)"),
		  PARSE_OPT_NONEG | PARSE_OPT_NOARG },
		OPT_GROUP(N_("Messaging")),
		{ OPTION_CALLBACK, 0, "add-header", NULL, N_("header"),
			    N_("add email header"), 0, header_callback },
		{ OPTION_CALLBACK, 0, "to", NULL, N_("email"), N_("add To: header"),
			    0, to_callback },
		{ OPTION_CALLBACK, 0, "cc", NULL, N_("email"), N_("add Cc: header"),
			    0, cc_callback },
		OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"),
			    N_("make first mail a reply to <message-id>")),
		{ OPTION_CALLBACK, 0, "attach", &rev, N_("boundary"),
			    N_("attach the patch"), PARSE_OPT_OPTARG,
			    attach_callback },
		{ OPTION_CALLBACK, 0, "inline", &rev, N_("boundary"),
			    N_("inline the patch"),
			    PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
			    inline_callback },
		{ OPTION_CALLBACK, 0, "thread", &thread, N_("style"),
			    N_("enable message threading, styles: shallow, deep"),
			    PARSE_OPT_OPTARG, thread_callback },
		OPT_STRING(0, "signature", &signature, N_("signature"),
			    N_("add a signature")),
		OPT_BOOLEAN(0, "quiet", &quiet,
			    N_("don't print the patch filenames")),
		OPT_END()
	};

	extra_hdr.strdup_strings = 1;
	extra_to.strdup_strings = 1;
	extra_cc.strdup_strings = 1;
	init_grep_defaults();
	git_config(git_format_config, NULL);
	init_revisions(&rev, prefix);
	rev.commit_format = CMIT_FMT_EMAIL;
	rev.verbose_header = 1;
	rev.diff = 1;
	rev.max_parents = 1;
	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
	rev.subject_prefix = fmt_patch_subject_prefix;
	memset(&s_r_opt, 0, sizeof(s_r_opt));
	s_r_opt.def = "HEAD";
	s_r_opt.revarg_opt = REVARG_COMMITTISH;

	if (default_attach) {
		rev.mime_boundary = default_attach;
		rev.no_inline = 1;
	}

	/*
	 * Parse the arguments before setup_revisions(), or something
	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
	 * possibly a valid SHA1.
	 */
	argc = parse_options(argc, argv, prefix, builtin_format_patch_options,
			     builtin_format_patch_usage,
			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
			     PARSE_OPT_KEEP_DASHDASH);

	if (do_signoff) {
		const char *committer;
		const char *endpos;
		committer = git_committer_info(IDENT_STRICT);
		endpos = strchr(committer, '>');
		if (!endpos)
			die(_("bogus committer info %s"), committer);
		add_signoff = xmemdupz(committer, endpos - committer + 1);
	}

	for (i = 0; i < extra_hdr.nr; i++) {
		strbuf_addstr(&buf, extra_hdr.items[i].string);
		strbuf_addch(&buf, '\n');
	}

	if (extra_to.nr)
		strbuf_addstr(&buf, "To: ");
	for (i = 0; i < extra_to.nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_to.items[i].string);
		if (i + 1 < extra_to.nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	if (extra_cc.nr)
		strbuf_addstr(&buf, "Cc: ");
	for (i = 0; i < extra_cc.nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_cc.items[i].string);
		if (i + 1 < extra_cc.nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	rev.extra_headers = strbuf_detach(&buf, NULL);

	if (start_number < 0)
		start_number = 1;

	/*
	 * If numbered is set solely due to format.numbered in config,
	 * and it would conflict with --keep-subject (-k) from the
	 * command line, reset "numbered".
	 */
	if (numbered && keep_subject && !numbered_cmdline_opt)
		numbered = 0;

	if (numbered && keep_subject)
		die (_("-n and -k are mutually exclusive."));
	if (keep_subject && subject_prefix)
		die (_("--subject-prefix and -k are mutually exclusive."));
	rev.preserve_subject = keep_subject;

	argc = setup_revisions(argc, argv, &rev, &s_r_opt);
	if (argc > 1)
		die (_("unrecognized argument: %s"), argv[1]);

	if (rev.diffopt.output_format & DIFF_FORMAT_NAME)
		die(_("--name-only does not make sense"));
	if (rev.diffopt.output_format & DIFF_FORMAT_NAME_STATUS)
		die(_("--name-status does not make sense"));
	if (rev.diffopt.output_format & DIFF_FORMAT_CHECKDIFF)
		die(_("--check does not make sense"));

	if (!use_patch_format &&
		(!rev.diffopt.output_format ||
		 rev.diffopt.output_format == DIFF_FORMAT_PATCH))
		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY;

	/* Always generate a patch */
	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;

	if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
		DIFF_OPT_SET(&rev.diffopt, BINARY);

	if (rev.show_notes)
		init_display_notes(&rev.notes_opt);

	if (!use_stdout)
		output_directory = set_outdir(prefix, output_directory);
	else
		setup_pager();

	if (output_directory) {
		if (use_stdout)
			die(_("standard output, or directory, which one?"));
		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
			die_errno(_("Could not create directory '%s'"),
				  output_directory);
	}

	if (rev.pending.nr == 1) {
		if (rev.max_count < 0 && !rev.show_root_diff) {
			/*
			 * This is traditional behaviour of "git format-patch
			 * origin" that prepares what the origin side still
			 * does not have.
			 */
			unsigned char sha1[20];
			const char *ref;

			rev.pending.objects[0].item->flags |= UNINTERESTING;
			add_head_to_pending(&rev);
			ref = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
			if (ref && !prefixcmp(ref, "refs/heads/"))
				branch_name = xstrdup(ref + strlen("refs/heads/"));
			else
				branch_name = xstrdup(""); /* no branch */
		}
		/*
		 * Otherwise, it is "format-patch -22 HEAD", and/or
		 * "format-patch --root HEAD".  The user wants
		 * get_revision() to do the usual traversal.
		 */
	}

	/*
	 * We cannot move this anywhere earlier because we do want to
	 * know if --root was given explicitly from the command line.
	 */
	rev.show_root_diff = 1;

	if (cover_letter) {
		/*
		 * NEEDSWORK:randomly pick one positive commit to show
		 * diffstat; this is often the tip and the command
		 * happens to do the right thing in most cases, but a
		 * complex command like "--cover-letter a b c ^bottom"
		 * picks "c" and shows diffstat between bottom..c
		 * which may not match what the series represents at
		 * all and totally broken.
		 */
		int i;
		for (i = 0; i < rev.pending.nr; i++) {
			struct object *o = rev.pending.objects[i].item;
			if (!(o->flags & UNINTERESTING))
				head = (struct commit *)o;
		}
		/* There is nothing to show; it is not an error, though. */
		if (!head)
			return 0;
		if (!branch_name)
			branch_name = find_branch_name(&rev);
	}

	if (ignore_if_in_upstream) {
		/* Don't say anything if head and upstream are the same. */
		if (rev.pending.nr == 2) {
			struct object_array_entry *o = rev.pending.objects;
			if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
				return 0;
		}
		get_patch_ids(&rev, &ids);
	}

	if (!use_stdout)
		realstdout = xfdopen(xdup(1), "w");

	if (prepare_revision_walk(&rev))
		die(_("revision walk setup failed"));
	rev.boundary = 1;
	while ((commit = get_revision(&rev)) != NULL) {
		if (commit->object.flags & BOUNDARY) {
			boundary_count++;
			origin = (boundary_count == 1) ? commit : NULL;
			continue;
		}

		if (ignore_if_in_upstream &&
				has_commit_patch_id(commit, &ids))
			continue;

		nr++;
		list = xrealloc(list, nr * sizeof(list[0]));
		list[nr - 1] = commit;
	}
	total = nr;
	if (!keep_subject && auto_number && total > 1)
		numbered = 1;
	if (numbered)
		rev.total = total + start_number - 1;
	if (in_reply_to || thread || cover_letter)
		rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
	if (in_reply_to) {
		const char *msgid = clean_message_id(in_reply_to);
		string_list_append(rev.ref_message_ids, msgid);
	}
	rev.numbered_files = numbered_files;
	rev.patch_suffix = fmt_patch_suffix;
	if (cover_letter) {
		if (thread)
			gen_message_id(&rev, "cover");
		make_cover_letter(&rev, use_stdout, numbered, numbered_files,
				  origin, nr, list, head, branch_name, quiet);
		total++;
		start_number--;
	}
	rev.add_signoff = add_signoff;
	while (0 <= --nr) {
		int shown;
		commit = list[nr];
		rev.nr = total - nr + (start_number - 1);
		/* Make the second and subsequent mails replies to the first */
		if (thread) {
			/* Have we already had a message ID? */
			if (rev.message_id) {
				/*
				 * For deep threading: make every mail
				 * a reply to the previous one, no
				 * matter what other options are set.
				 *
				 * For shallow threading:
				 *
				 * Without --cover-letter and
				 * --in-reply-to, make every mail a
				 * reply to the one before.
				 *
				 * With --in-reply-to but no
				 * --cover-letter, make every mail a
				 * reply to the <reply-to>.
				 *
				 * With --cover-letter, make every
				 * mail but the cover letter a reply
				 * to the cover letter.  The cover
				 * letter is a reply to the
				 * --in-reply-to, if specified.
				 */
				if (thread == THREAD_SHALLOW
				    && rev.ref_message_ids->nr > 0
				    && (!cover_letter || rev.nr > 1))
					free(rev.message_id);
				else
					string_list_append(rev.ref_message_ids,
							   rev.message_id);
			}
			gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
		}

		if (!use_stdout &&
		    reopen_stdout(numbered_files ? NULL : commit, NULL, &rev, quiet))
			die(_("Failed to create output files"));
		shown = log_tree_commit(&rev, commit);
		free(commit->buffer);
		commit->buffer = NULL;

		/* We put one extra blank line between formatted
		 * patches and this flag is used by log-tree code
		 * to see if it needs to emit a LF before showing
		 * the log; when using one file per patch, we do
		 * not want the extra blank line.
		 */
		if (!use_stdout)
			rev.shown_one = 0;
		if (shown) {
			if (rev.mime_boundary)
				printf("\n--%s%s--\n\n\n",
				       mime_boundary_leader,
				       rev.mime_boundary);
			else
				print_signature();
		}
		if (!use_stdout)
			fclose(stdout);
	}
	free(list);
	free(branch_name);
	string_list_clear(&extra_to, 0);
	string_list_clear(&extra_cc, 0);
	string_list_clear(&extra_hdr, 0);
	if (ignore_if_in_upstream)
		free_patch_ids(&ids);
	return 0;
}
示例#15
0
文件: notes.c 项目: claudelee/git
static void create_note(const unsigned char *object, struct msg_arg *msg,
			int append_only, const unsigned char *prev,
			unsigned char *result)
{
	char *path = NULL;

	if (msg->use_editor || !msg->given) {
		int fd;

		/* write the template message before editing: */
		path = git_pathdup("NOTES_EDITMSG");
		fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
		if (fd < 0)
			die_errno("could not create file '%s'", path);

		if (msg->given)
			write_or_die(fd, msg->buf.buf, msg->buf.len);
		else if (prev && !append_only)
			write_note_data(fd, prev);
		write_or_die(fd, note_template, strlen(note_template));

		write_commented_object(fd, object);

		close(fd);
		strbuf_reset(&(msg->buf));

		if (launch_editor(path, &(msg->buf), NULL)) {
			die("Please supply the note contents using either -m" \
			    " or -F option");
		}
		stripspace(&(msg->buf), 1);
	}

	if (prev && append_only) {
		/* Append buf to previous note contents */
		unsigned long size;
		enum object_type type;
		char *prev_buf = read_sha1_file(prev, &type, &size);

		strbuf_grow(&(msg->buf), size + 1);
		if (msg->buf.len && prev_buf && size)
			strbuf_insert(&(msg->buf), 0, "\n", 1);
		if (prev_buf && size)
			strbuf_insert(&(msg->buf), 0, prev_buf, size);
		free(prev_buf);
	}

	if (!msg->buf.len) {
		fprintf(stderr, "Removing note for object %s\n",
			sha1_to_hex(object));
		hashclr(result);
	} else {
		if (write_sha1_file(msg->buf.buf, msg->buf.len, blob_type, result)) {
			error("unable to write note object");
			if (path)
				error("The note contents has been left in %s",
				      path);
			exit(128);
		}
	}

	if (path) {
		unlink_or_warn(path);
		free(path);
	}
}
示例#16
0
void create_branch(const char *head,
		   const char *name, const char *start_name,
		   int force, int reflog, int clobber_head,
		   int quiet, enum branch_track track)
{
	struct ref_lock *lock = NULL;
	struct commit *commit;
	unsigned char sha1[20];
	char *real_ref, msg[PATH_MAX + 20];
	struct strbuf ref = STRBUF_INIT;
	int forcing = 0;
	int dont_change_ref = 0;
	int explicit_tracking = 0;

	if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
		explicit_tracking = 1;

	if (validate_new_branchname(name, &ref, force,
				    track == BRANCH_TRACK_OVERRIDE ||
				    clobber_head)) {
		if (!force)
			dont_change_ref = 1;
		else
			forcing = 1;
	}

	real_ref = NULL;
	if (get_sha1(start_name, sha1)) {
		if (explicit_tracking) {
			if (advice_set_upstream_failure) {
				error(_(upstream_missing), start_name);
				advise(_(upstream_advice));
				exit(1);
			}
			die(_(upstream_missing), start_name);
		}
		die(_("Not a valid object name: '%s'."), start_name);
	}

	switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
	case 0:
		/* Not branching from any existing branch */
		if (explicit_tracking)
			die(_(upstream_not_branch), start_name);
		break;
	case 1:
		/* Unique completion -- good, only if it is a real branch */
		if (!starts_with(real_ref, "refs/heads/") &&
		    validate_remote_tracking_branch(real_ref)) {
			if (explicit_tracking)
				die(_(upstream_not_branch), start_name);
			else
				real_ref = NULL;
		}
		break;
	default:
		die(_("Ambiguous object name: '%s'."), start_name);
		break;
	}

	if ((commit = lookup_commit_reference(sha1)) == NULL)
		die(_("Not a valid branch point: '%s'."), start_name);
	hashcpy(sha1, commit->object.sha1);

	if (!dont_change_ref) {
		lock = lock_any_ref_for_update(ref.buf, NULL, 0, NULL);
		if (!lock)
			die_errno(_("Failed to lock ref for update"));
	}

	if (reflog)
		log_all_ref_updates = 1;

	if (forcing)
		snprintf(msg, sizeof msg, "branch: Reset to %s",
			 start_name);
	else if (!dont_change_ref)
		snprintf(msg, sizeof msg, "branch: Created from %s",
			 start_name);

	if (real_ref && track)
		setup_tracking(ref.buf + 11, real_ref, track, quiet);

	if (!dont_change_ref)
		if (write_ref_sha1(lock, sha1, msg) < 0)
			die_errno(_("Failed to write ref"));

	strbuf_release(&ref);
	free(real_ref);
}
示例#17
0
/*
 * Make a pack stream and spit it out into file descriptor fd
 */
static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
{
	/*
	 * The child becomes pack-objects --revs; we feed
	 * the revision parameters to it via its stdin and
	 * let its stdout go back to the other end.
	 */
	const char *argv[] = {
		"pack-objects",
		"--all-progress-implied",
		"--revs",
		"--stdout",
		NULL,
		NULL,
		NULL,
		NULL,
		NULL,
	};
	struct child_process po;
	int i;

	i = 4;
	if (args->use_thin_pack)
		argv[i++] = "--thin";
	if (args->use_ofs_delta)
		argv[i++] = "--delta-base-offset";
	if (args->quiet || !args->progress)
		argv[i++] = "-q";
	if (args->progress)
		argv[i++] = "--progress";
	memset(&po, 0, sizeof(po));
	po.argv = argv;
	po.in = -1;
	po.out = args->stateless_rpc ? -1 : fd;
	po.git_cmd = 1;
	if (start_command(&po))
		die_errno("git pack-objects failed");

	/*
	 * We feed the pack-objects we just spawned with revision
	 * parameters by writing to the pipe.
	 */
	for (i = 0; i < extra->nr; i++)
		if (!feed_object(extra->array[i], po.in, 1))
			break;

	while (refs) {
		if (!is_null_sha1(refs->old_sha1) &&
		    !feed_object(refs->old_sha1, po.in, 1))
			break;
		if (!is_null_sha1(refs->new_sha1) &&
		    !feed_object(refs->new_sha1, po.in, 0))
			break;
		refs = refs->next;
	}

	close(po.in);

	if (args->stateless_rpc) {
		char *buf = xmalloc(LARGE_PACKET_MAX);
		while (1) {
			ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
			if (n <= 0)
				break;
			send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
		}
		free(buf);
		close(po.out);
		po.out = -1;
	}

	if (finish_command(&po))
		return -1;
	return 0;
}
示例#18
0
文件: stash.c 项目: PhilipOakley/git
int cmd_stash(int argc, const char **argv, const char *prefix)
{
	int i = -1;
	pid_t pid = getpid();
	const char *index_file;
	struct argv_array args = ARGV_ARRAY_INIT;

	struct option options[] = {
		OPT_END()
	};

	if (!use_builtin_stash()) {
		const char *path = mkpath("%s/git-legacy-stash",
					  git_exec_path());

		if (sane_execvp(path, (char **)argv) < 0)
			die_errno(_("could not exec %s"), path);
		else
			BUG("sane_execvp() returned???");
	}

	prefix = setup_git_directory();
	trace_repo_setup(prefix);
	setup_work_tree();

	git_config(git_diff_basic_config, NULL);

	argc = parse_options(argc, argv, prefix, options, git_stash_usage,
			     PARSE_OPT_KEEP_UNKNOWN | PARSE_OPT_KEEP_DASHDASH);

	index_file = get_index_file();
	strbuf_addf(&stash_index_path, "%s.stash.%" PRIuMAX, index_file,
		    (uintmax_t)pid);

	if (!argc)
		return !!push_stash(0, NULL, prefix);
	else if (!strcmp(argv[0], "apply"))
		return !!apply_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "clear"))
		return !!clear_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "drop"))
		return !!drop_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "pop"))
		return !!pop_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "branch"))
		return !!branch_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "list"))
		return !!list_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "show"))
		return !!show_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "store"))
		return !!store_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "create"))
		return !!create_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "push"))
		return !!push_stash(argc, argv, prefix);
	else if (!strcmp(argv[0], "save"))
		return !!save_stash(argc, argv, prefix);
	else if (*argv[0] != '-')
		usage_msg_opt(xstrfmt(_("unknown subcommand: %s"), argv[0]),
			      git_stash_usage, options);

	if (strcmp(argv[0], "-p")) {
		while (++i < argc && strcmp(argv[i], "--")) {
			/*
			 * `akpqu` is a string which contains all short options,
			 * except `-m` which is verified separately.
			 */
			if ((strlen(argv[i]) == 2) && *argv[i] == '-' &&
			    strchr("akpqu", argv[i][1]))
				continue;

			if (!strcmp(argv[i], "--all") ||
			    !strcmp(argv[i], "--keep-index") ||
			    !strcmp(argv[i], "--no-keep-index") ||
			    !strcmp(argv[i], "--patch") ||
			    !strcmp(argv[i], "--quiet") ||
			    !strcmp(argv[i], "--include-untracked"))
				continue;

			/*
			 * `-m` and `--message=` are verified separately because
			 * they need to be immediately followed by a string
			 * (i.e.`-m"foobar"` or `--message="foobar"`).
			 */
			if (starts_with(argv[i], "-m") ||
			    starts_with(argv[i], "--message="))
				continue;

			usage_with_options(git_stash_usage, options);
		}
	}

	argv_array_push(&args, "push");
	argv_array_pushv(&args, argv);
	return !!push_stash(args.argc, args.argv, prefix);
}
示例#19
0
文件: setup.c 项目: asoltys/git
/*
 * We cannot decide in this function whether we are in the work tree or
 * not, since the config can only be read _after_ this function was called.
 */
const char *setup_git_directory_gently(int *nongit_ok)
{
	const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
	const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
	static char cwd[PATH_MAX+1];
	const char *gitdirenv;
	const char *gitfile_dir;
	int len, offset, ceil_offset;

	/*
	 * Let's assume that we are in a git repository.
	 * If it turns out later that we are somewhere else, the value will be
	 * updated accordingly.
	 */
	if (nongit_ok)
		*nongit_ok = 0;

	/*
	 * If GIT_DIR is set explicitly, we're not going
	 * to do any discovery, but we still do repository
	 * validation.
	 */
	gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
	if (gitdirenv) {
		if (PATH_MAX - 40 < strlen(gitdirenv))
			die("'$%s' too big", GIT_DIR_ENVIRONMENT);
		if (is_git_directory(gitdirenv)) {
			static char buffer[1024 + 1];
			const char *retval;

			if (!work_tree_env) {
				retval = set_work_tree(gitdirenv);
				/* config may override worktree */
				if (check_repository_format_gently(nongit_ok))
					return NULL;
				return retval;
			}
			if (check_repository_format_gently(nongit_ok))
				return NULL;
			retval = get_relative_cwd(buffer, sizeof(buffer) - 1,
					get_git_work_tree());
			if (!retval || !*retval)
				return NULL;
			set_git_dir(make_absolute_path(gitdirenv));
			if (chdir(work_tree_env) < 0)
				die_errno ("Could not chdir to '%s'", work_tree_env);
			strcat(buffer, "/");
			return retval;
		}
		if (nongit_ok) {
			*nongit_ok = 1;
			return NULL;
		}
		die("Not a git repository: '%s'", gitdirenv);
	}

	if (!getcwd(cwd, sizeof(cwd)-1))
		die_errno("Unable to read current working directory");

	ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
	if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
		ceil_offset = 1;

	/*
	 * Test in the following order (relative to the cwd):
	 * - .git (file containing "gitdir: <path>")
	 * - .git/
	 * - ./ (bare)
	 * - ../.git
	 * - ../.git/
	 * - ../ (bare)
	 * - ../../.git/
	 *   etc.
	 */
	offset = len = strlen(cwd);
	for (;;) {
		gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
		if (gitfile_dir) {
			if (set_git_dir(gitfile_dir))
				die("Repository setup failed");
			break;
		}
		if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
			break;
		if (is_git_directory(".")) {
			inside_git_dir = 1;
			if (!work_tree_env)
				inside_work_tree = 0;
			if (offset != len) {
				cwd[offset] = '\0';
				setenv(GIT_DIR_ENVIRONMENT, cwd, 1);
			} else
				setenv(GIT_DIR_ENVIRONMENT, ".", 1);
			check_repository_format_gently(nongit_ok);
			return NULL;
		}
		while (--offset > ceil_offset && cwd[offset] != '/');
		if (offset <= ceil_offset) {
			if (nongit_ok) {
				if (chdir(cwd))
					die_errno("Cannot come back to cwd");
				*nongit_ok = 1;
				return NULL;
			}
			die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
		}
		if (chdir(".."))
			die_errno("Cannot change to '%s/..'", cwd);
	}

	inside_git_dir = 0;
	if (!work_tree_env)
		inside_work_tree = 1;
	git_work_tree_cfg = xstrndup(cwd, offset);
	if (check_repository_format_gently(nongit_ok))
		return NULL;
	if (offset == len)
		return NULL;

	/* Make "offset" point to past the '/', and add a '/' at the end */
	offset++;
	cwd[len++] = '/';
	cwd[len] = 0;
	return cwd + offset;
}
示例#20
0
文件: bundle.c 项目: adymitruk/git
int create_bundle(struct bundle_header *header, const char *path,
		int argc, const char **argv)
{
	static struct lock_file lock;
	int bundle_fd = -1;
	int bundle_to_stdout;
	const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
	const char **argv_pack = xmalloc(6 * sizeof(const char *));
	int i, ref_count = 0;
	char buffer[1024];
	struct rev_info revs;
	struct child_process rls;
	FILE *rls_fout;

	bundle_to_stdout = !strcmp(path, "-");
	if (bundle_to_stdout)
		bundle_fd = 1;
	else
		bundle_fd = hold_lock_file_for_update(&lock, path,
						      LOCK_DIE_ON_ERROR);

	/* write signature */
	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));

	/* init revs to list objects for pack-objects later */
	save_commit_buffer = 0;
	init_revisions(&revs, NULL);

	/* write prerequisites */
	memcpy(argv_boundary + 3, argv + 1, argc * sizeof(const char *));
	argv_boundary[0] = "rev-list";
	argv_boundary[1] = "--boundary";
	argv_boundary[2] = "--pretty=oneline";
	argv_boundary[argc + 2] = NULL;
	memset(&rls, 0, sizeof(rls));
	rls.argv = argv_boundary;
	rls.out = -1;
	rls.git_cmd = 1;
	if (start_command(&rls))
		return -1;
	rls_fout = xfdopen(rls.out, "r");
	while (fgets(buffer, sizeof(buffer), rls_fout)) {
		unsigned char sha1[20];
		if (buffer[0] == '-') {
			write_or_die(bundle_fd, buffer, strlen(buffer));
			if (!get_sha1_hex(buffer + 1, sha1)) {
				struct object *object = parse_object(sha1);
				object->flags |= UNINTERESTING;
				add_pending_object(&revs, object, buffer);
			}
		} else if (!get_sha1_hex(buffer, sha1)) {
			struct object *object = parse_object(sha1);
			object->flags |= SHOWN;
		}
	}
	fclose(rls_fout);
	if (finish_command(&rls))
		return error("rev-list died");

	/* write references */
	argc = setup_revisions(argc, argv, &revs, NULL);

	if (argc > 1)
		return error("unrecognized argument: %s'", argv[1]);

	object_array_remove_duplicates(&revs.pending);

	for (i = 0; i < revs.pending.nr; i++) {
		struct object_array_entry *e = revs.pending.objects + i;
		unsigned char sha1[20];
		char *ref;
		const char *display_ref;
		int flag;

		if (e->item->flags & UNINTERESTING)
			continue;
		if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
			continue;
		if (!resolve_ref(e->name, sha1, 1, &flag))
			flag = 0;
		display_ref = (flag & REF_ISSYMREF) ? e->name : ref;

		if (e->item->type == OBJ_TAG &&
				!is_tag_in_date_range(e->item, &revs)) {
			e->item->flags |= UNINTERESTING;
			continue;
		}

		/*
		 * Make sure the refs we wrote out is correct; --max-count and
		 * other limiting options could have prevented all the tips
		 * from getting output.
		 *
		 * Non commit objects such as tags and blobs do not have
		 * this issue as they are not affected by those extra
		 * constraints.
		 */
		if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
			warning("ref '%s' is excluded by the rev-list options",
				e->name);
			free(ref);
			continue;
		}
		/*
		 * If you run "git bundle create bndl v1.0..v2.0", the
		 * name of the positive ref is "v2.0" but that is the
		 * commit that is referenced by the tag, and not the tag
		 * itself.
		 */
		if (hashcmp(sha1, e->item->sha1)) {
			/*
			 * Is this the positive end of a range expressed
			 * in terms of a tag (e.g. v2.0 from the range
			 * "v1.0..v2.0")?
			 */
			struct commit *one = lookup_commit_reference(sha1);
			struct object *obj;

			if (e->item == &(one->object)) {
				/*
				 * Need to include e->name as an
				 * independent ref to the pack-objects
				 * input, so that the tag is included
				 * in the output; otherwise we would
				 * end up triggering "empty bundle"
				 * error.
				 */
				obj = parse_object(sha1);
				obj->flags |= SHOWN;
				add_pending_object(&revs, obj, e->name);
			}
			free(ref);
			continue;
		}

		ref_count++;
		write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
		write_or_die(bundle_fd, " ", 1);
		write_or_die(bundle_fd, display_ref, strlen(display_ref));
		write_or_die(bundle_fd, "\n", 1);
		free(ref);
	}
	if (!ref_count)
		die ("Refusing to create empty bundle.");

	/* end header */
	write_or_die(bundle_fd, "\n", 1);

	/* write pack */
	argv_pack[0] = "pack-objects";
	argv_pack[1] = "--all-progress-implied";
	argv_pack[2] = "--stdout";
	argv_pack[3] = "--thin";
	argv_pack[4] = "--delta-base-offset";
	argv_pack[5] = NULL;
	memset(&rls, 0, sizeof(rls));
	rls.argv = argv_pack;
	rls.in = -1;
	rls.out = bundle_fd;
	rls.git_cmd = 1;
	if (start_command(&rls))
		return error("Could not spawn pack-objects");

	/*
	 * start_command closed bundle_fd if it was > 1
	 * so set the lock fd to -1 so commit_lock_file()
	 * won't fail trying to close it.
	 */
	lock.fd = -1;

	for (i = 0; i < revs.pending.nr; i++) {
		struct object *object = revs.pending.objects[i].item;
		if (object->flags & UNINTERESTING)
			write_or_die(rls.in, "^", 1);
		write_or_die(rls.in, sha1_to_hex(object->sha1), 40);
		write_or_die(rls.in, "\n", 1);
	}
	close(rls.in);
	if (finish_command(&rls))
		return error ("pack-objects died");
	if (!bundle_to_stdout) {
		if (commit_lock_file(&lock))
			die_errno("cannot create '%s'", path);
	}
	return 0;
}
示例#21
0
文件: refs.c 项目: ratnikov/git
int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
{
	const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec;
	char *tz_c;
	int logfd, tz, reccnt = 0;
	struct stat st;
	unsigned long date;
	unsigned char logged_sha1[20];
	void *log_mapped;
	size_t mapsz;

	logfile = git_path("logs/%s", ref);
	logfd = open(logfile, O_RDONLY, 0);
	if (logfd < 0)
		die_errno("Unable to read log '%s'", logfile);
	fstat(logfd, &st);
	if (!st.st_size)
		die("Log %s is empty.", logfile);
	mapsz = xsize_t(st.st_size);
	log_mapped = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, logfd, 0);
	logdata = log_mapped;
	close(logfd);

	lastrec = NULL;
	rec = logend = logdata + st.st_size;
	while (logdata < rec) {
		reccnt++;
		if (logdata < rec && *(rec-1) == '\n')
			rec--;
		lastgt = NULL;
		while (logdata < rec && *(rec-1) != '\n') {
			rec--;
			if (*rec == '>')
				lastgt = rec;
		}
		if (!lastgt)
			die("Log %s is corrupt.", logfile);
		date = strtoul(lastgt + 1, &tz_c, 10);
		if (date <= at_time || cnt == 0) {
			tz = strtoul(tz_c, NULL, 10);
			if (msg)
				*msg = ref_msg(rec, logend);
			if (cutoff_time)
				*cutoff_time = date;
			if (cutoff_tz)
				*cutoff_tz = tz;
			if (cutoff_cnt)
				*cutoff_cnt = reccnt - 1;
			if (lastrec) {
				if (get_sha1_hex(lastrec, logged_sha1))
					die("Log %s is corrupt.", logfile);
				if (get_sha1_hex(rec + 41, sha1))
					die("Log %s is corrupt.", logfile);
				if (hashcmp(logged_sha1, sha1)) {
					warning("Log %s has gap after %s.",
						logfile, show_date(date, tz, DATE_RFC2822));
				}
			}
			else if (date == at_time) {
				if (get_sha1_hex(rec + 41, sha1))
					die("Log %s is corrupt.", logfile);
			}
			else {
				if (get_sha1_hex(rec + 41, logged_sha1))
					die("Log %s is corrupt.", logfile);
				if (hashcmp(logged_sha1, sha1)) {
					warning("Log %s unexpectedly ended on %s.",
						logfile, show_date(date, tz, DATE_RFC2822));
				}
			}
			munmap(log_mapped, mapsz);
			return 0;
		}
		lastrec = rec;
		if (cnt > 0)
			cnt--;
	}

	rec = logdata;
	while (rec < logend && *rec != '>' && *rec != '\n')
		rec++;
	if (rec == logend || *rec == '\n')
		die("Log %s is corrupt.", logfile);
	date = strtoul(rec + 1, &tz_c, 10);
	tz = strtoul(tz_c, NULL, 10);
	if (get_sha1_hex(logdata, sha1))
		die("Log %s is corrupt.", logfile);
	if (is_null_sha1(sha1)) {
		if (get_sha1_hex(logdata + 41, sha1))
			die("Log %s is corrupt.", logfile);
	}
	if (msg)
		*msg = ref_msg(logdata, logend);
	munmap(log_mapped, mapsz);

	if (cutoff_time)
		*cutoff_time = date;
	if (cutoff_tz)
		*cutoff_tz = tz;
	if (cutoff_cnt)
		*cutoff_cnt = reccnt;
	return 1;
}
示例#22
0
static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
{
	struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
	struct ref dummy = {NULL}, *tail = &dummy;
	struct child_process rsync;
	const char *args[5];
	int temp_dir_len;

	if (for_push)
		return NULL;

	/* copy the refs to the temporary directory */

	strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
	if (!mkdtemp(temp_dir.buf))
		die_errno ("Could not make temporary directory");
	temp_dir_len = temp_dir.len;

	strbuf_addstr(&buf, rsync_url(transport->url));
	strbuf_addstr(&buf, "/refs");

	memset(&rsync, 0, sizeof(rsync));
	rsync.argv = args;
	rsync.stdout_to_stderr = 1;
	args[0] = "rsync";
	args[1] = (transport->verbose > 1) ? "-rv" : "-r";
	args[2] = buf.buf;
	args[3] = temp_dir.buf;
	args[4] = NULL;

	if (run_command(&rsync))
		die ("Could not run rsync to get refs");

	strbuf_reset(&buf);
	strbuf_addstr(&buf, rsync_url(transport->url));
	strbuf_addstr(&buf, "/packed-refs");

	args[2] = buf.buf;

	if (run_command(&rsync))
		die ("Could not run rsync to get refs");

	/* read the copied refs */

	strbuf_addstr(&temp_dir, "/refs");
	read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
	strbuf_setlen(&temp_dir, temp_dir_len);

	tail = &dummy;
	strbuf_addstr(&temp_dir, "/packed-refs");
	insert_packed_refs(temp_dir.buf, &tail);
	strbuf_setlen(&temp_dir, temp_dir_len);

	if (remove_dir_recursively(&temp_dir, 0))
		warning ("Error removing temporary directory %s.",
				temp_dir.buf);

	strbuf_release(&buf);
	strbuf_release(&temp_dir);

	return dummy.next;
}
示例#23
0
文件: worktree.c 项目: ayanmw/git
static int add_worktree(const char *path, const char *refname,
			const struct add_opts *opts)
{
	struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
	struct strbuf sb = STRBUF_INIT;
	const char *name;
	struct stat st;
	struct child_process cp = CHILD_PROCESS_INIT;
	struct argv_array child_env = ARGV_ARRAY_INIT;
	int counter = 0, len, ret;
	struct strbuf symref = STRBUF_INIT;
	struct commit *commit = NULL;
	int is_branch = 0;

	if (file_exists(path) && !is_empty_dir(path))
		die(_("'%s' already exists"), path);

	/* is 'refname' a branch or commit? */
	if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
	    ref_exists(symref.buf)) {
		is_branch = 1;
		if (!opts->force)
			die_if_checked_out(symref.buf, 0);
	}
	commit = lookup_commit_reference_by_name(refname);
	if (!commit)
		die(_("invalid reference: %s"), refname);

	name = worktree_basename(path, &len);
	git_path_buf(&sb_repo, "worktrees/%.*s", (int)(path + len - name), name);
	len = sb_repo.len;
	if (safe_create_leading_directories_const(sb_repo.buf))
		die_errno(_("could not create leading directories of '%s'"),
			  sb_repo.buf);
	while (!stat(sb_repo.buf, &st)) {
		counter++;
		strbuf_setlen(&sb_repo, len);
		strbuf_addf(&sb_repo, "%d", counter);
	}
	name = strrchr(sb_repo.buf, '/') + 1;

	junk_pid = getpid();
	atexit(remove_junk);
	sigchain_push_common(remove_junk_on_signal);

	if (mkdir(sb_repo.buf, 0777))
		die_errno(_("could not create directory of '%s'"), sb_repo.buf);
	junk_git_dir = xstrdup(sb_repo.buf);
	is_junk = 1;

	/*
	 * lock the incomplete repo so prune won't delete it, unlock
	 * after the preparation is over.
	 */
	strbuf_addf(&sb, "%s/locked", sb_repo.buf);
	if (!opts->keep_locked)
		write_file(sb.buf, "initializing");
	else
		write_file(sb.buf, "added with --lock");

	strbuf_addf(&sb_git, "%s/.git", path);
	if (safe_create_leading_directories_const(sb_git.buf))
		die_errno(_("could not create leading directories of '%s'"),
			  sb_git.buf);
	junk_work_tree = xstrdup(path);

	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/gitdir", sb_repo.buf);
	write_file(sb.buf, "%s", real_path(sb_git.buf));
	write_file(sb_git.buf, "gitdir: %s/worktrees/%s",
		   real_path(get_git_common_dir()), name);
	/*
	 * This is to keep resolve_ref() happy. We need a valid HEAD
	 * or is_git_directory() will reject the directory. Any value which
	 * looks like an object ID will do since it will be immediately
	 * replaced by the symbolic-ref or update-ref invocation in the new
	 * worktree.
	 */
	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
	write_file(sb.buf, "%s", sha1_to_hex(null_sha1));
	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
	write_file(sb.buf, "../..");

	fprintf_ln(stderr, _("Preparing %s (identifier %s)"), path, name);

	argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
	argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
	cp.git_cmd = 1;

	if (!is_branch)
		argv_array_pushl(&cp.args, "update-ref", "HEAD",
				 oid_to_hex(&commit->object.oid), NULL);
	else
		argv_array_pushl(&cp.args, "symbolic-ref", "HEAD",
				 symref.buf, NULL);
	cp.env = child_env.argv;
	ret = run_command(&cp);
	if (ret)
		goto done;

	if (opts->checkout) {
		cp.argv = NULL;
		argv_array_clear(&cp.args);
		argv_array_pushl(&cp.args, "reset", "--hard", NULL);
		cp.env = child_env.argv;
		ret = run_command(&cp);
		if (ret)
			goto done;
	}

	is_junk = 0;
	FREE_AND_NULL(junk_work_tree);
	FREE_AND_NULL(junk_git_dir);

done:
	if (ret || !opts->keep_locked) {
		strbuf_reset(&sb);
		strbuf_addf(&sb, "%s/locked", sb_repo.buf);
		unlink_or_warn(sb.buf);
	}

	/*
	 * Hook failure does not warrant worktree deletion, so run hook after
	 * is_junk is cleared, but do return appropriate code when hook fails.
	 */
	if (!ret && opts->checkout) {
		const char *hook = find_hook("post-checkout");
		if (hook) {
			const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
			cp.git_cmd = 0;
			cp.no_stdin = 1;
			cp.stdout_to_stderr = 1;
			cp.dir = path;
			cp.env = env;
			cp.argv = NULL;
			argv_array_pushl(&cp.args, absolute_path(hook),
					 oid_to_hex(&null_oid),
					 oid_to_hex(&commit->object.oid),
					 "1", NULL);
			ret = run_command(&cp);
		}
	}

	argv_array_clear(&child_env);
	strbuf_release(&sb);
	strbuf_release(&symref);
	strbuf_release(&sb_repo);
	strbuf_release(&sb_git);
	return ret;
}
示例#24
0
static int rsync_transport_push(struct transport *transport,
		int refspec_nr, const char **refspec, int flags)
{
	struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
	int result = 0, i;
	struct child_process rsync;
	const char *args[10];

	if (flags & TRANSPORT_PUSH_MIRROR)
		return error("rsync transport does not support mirror mode");

	/* first push the objects */

	strbuf_addstr(&buf, rsync_url(transport->url));
	strbuf_addch(&buf, '/');

	memset(&rsync, 0, sizeof(rsync));
	rsync.argv = args;
	rsync.stdout_to_stderr = 1;
	i = 0;
	args[i++] = "rsync";
	args[i++] = "-a";
	if (flags & TRANSPORT_PUSH_DRY_RUN)
		args[i++] = "--dry-run";
	if (transport->verbose > 1)
		args[i++] = "-v";
	args[i++] = "--ignore-existing";
	args[i++] = "--exclude";
	args[i++] = "info";
	args[i++] = get_object_directory();
	args[i++] = buf.buf;
	args[i++] = NULL;

	if (run_command(&rsync))
		return error("Could not push objects to %s",
				rsync_url(transport->url));

	/* copy the refs to the temporary directory; they could be packed. */

	strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
	if (!mkdtemp(temp_dir.buf))
		die_errno ("Could not make temporary directory");
	strbuf_addch(&temp_dir, '/');

	if (flags & TRANSPORT_PUSH_ALL) {
		if (for_each_ref(write_one_ref, &temp_dir))
			return -1;
	} else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
		return -1;

	i = 2;
	if (flags & TRANSPORT_PUSH_DRY_RUN)
		args[i++] = "--dry-run";
	if (!(flags & TRANSPORT_PUSH_FORCE))
		args[i++] = "--ignore-existing";
	args[i++] = temp_dir.buf;
	args[i++] = rsync_url(transport->url);
	args[i++] = NULL;
	if (run_command(&rsync))
		result = error("Could not push to %s",
				rsync_url(transport->url));

	if (remove_dir_recursively(&temp_dir, 0))
		warning ("Could not remove temporary directory %s.",
				temp_dir.buf);

	strbuf_release(&buf);
	strbuf_release(&temp_dir);

	return result;
}
示例#25
0
文件: clone.c 项目: 00027jang27/git
static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
				   const char *src_repo, int src_baselen)
{
	struct dirent *de;
	struct stat buf;
	int src_len, dest_len;
	DIR *dir;

	dir = opendir(src->buf);
	if (!dir)
		die_errno(_("failed to open '%s'"), src->buf);

	if (mkdir(dest->buf, 0777)) {
		if (errno != EEXIST)
			die_errno(_("failed to create directory '%s'"), dest->buf);
		else if (stat(dest->buf, &buf))
			die_errno(_("failed to stat '%s'"), dest->buf);
		else if (!S_ISDIR(buf.st_mode))
			die(_("%s exists and is not a directory"), dest->buf);
	}

	strbuf_addch(src, '/');
	src_len = src->len;
	strbuf_addch(dest, '/');
	dest_len = dest->len;

	while ((de = readdir(dir)) != NULL) {
		strbuf_setlen(src, src_len);
		strbuf_addstr(src, de->d_name);
		strbuf_setlen(dest, dest_len);
		strbuf_addstr(dest, de->d_name);
		if (stat(src->buf, &buf)) {
			warning (_("failed to stat %s\n"), src->buf);
			continue;
		}
		if (S_ISDIR(buf.st_mode)) {
			if (de->d_name[0] != '.')
				copy_or_link_directory(src, dest,
						       src_repo, src_baselen);
			continue;
		}

		/* Files that cannot be copied bit-for-bit... */
		if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
			copy_alternates(src, dest, src_repo);
			continue;
		}

		if (unlink(dest->buf) && errno != ENOENT)
			die_errno(_("failed to unlink '%s'"), dest->buf);
		if (!option_no_hardlinks) {
			if (!link(src->buf, dest->buf))
				continue;
			if (option_local > 0)
				die_errno(_("failed to create link '%s'"), dest->buf);
			option_no_hardlinks = 1;
		}
		if (copy_file_with_time(dest->buf, src->buf, 0666))
			die_errno(_("failed to copy file to '%s'"), dest->buf);
	}
	closedir(dir);
}
示例#26
0
static const char *setup_explicit_git_dir(const char *gitdirenv,
					  char *cwd, int len,
					  int *nongit_ok)
{
	const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
	const char *worktree;
	char *gitfile;
	int offset;

	if (PATH_MAX - 40 < strlen(gitdirenv))
		die("'$%s' too big", GIT_DIR_ENVIRONMENT);

	gitfile = (char*)read_gitfile(gitdirenv);
	if (gitfile) {
		gitfile = xstrdup(gitfile);
		gitdirenv = gitfile;
	}

	if (!is_git_directory(gitdirenv)) {
		if (nongit_ok) {
			*nongit_ok = 1;
			free(gitfile);
			return NULL;
		}
		die("Not a git repository: '%s'", gitdirenv);
	}

	if (check_repository_format_gently(gitdirenv, nongit_ok)) {
		free(gitfile);
		return NULL;
	}

	/* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
	if (work_tree_env)
		set_git_work_tree(work_tree_env);
	else if (is_bare_repository_cfg > 0) {
		if (git_work_tree_cfg) /* #22.2, #30 */
			die("core.bare and core.worktree do not make sense");

		/* #18, #26 */
		set_git_dir(gitdirenv);
		free(gitfile);
		return NULL;
	}
	else if (git_work_tree_cfg) { /* #6, #14 */
		if (is_absolute_path(git_work_tree_cfg))
			set_git_work_tree(git_work_tree_cfg);
		else {
			char core_worktree[PATH_MAX];
			if (chdir(gitdirenv))
				die_errno("Could not chdir to '%s'", gitdirenv);
			if (chdir(git_work_tree_cfg))
				die_errno("Could not chdir to '%s'", git_work_tree_cfg);
			if (!getcwd(core_worktree, PATH_MAX))
				die_errno("Could not get directory '%s'", git_work_tree_cfg);
			if (chdir(cwd))
				die_errno("Could not come back to cwd");
			set_git_work_tree(core_worktree);
		}
	}
	else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) {
		/* #16d */
		set_git_dir(gitdirenv);
		free(gitfile);
		return NULL;
	}
	else /* #2, #10 */
		set_git_work_tree(".");

	/* set_git_work_tree() must have been called by now */
	worktree = get_git_work_tree();

	/* both get_git_work_tree() and cwd are already normalized */
	if (!strcmp(cwd, worktree)) { /* cwd == worktree */
		set_git_dir(gitdirenv);
		free(gitfile);
		return NULL;
	}

	offset = dir_inside_of(cwd, worktree);
	if (offset >= 0) {	/* cwd inside worktree? */
		set_git_dir(real_path(gitdirenv));
		if (chdir(worktree))
			die_errno("Could not chdir to '%s'", worktree);
		cwd[len++] = '/';
		cwd[len] = '\0';
		free(gitfile);
		return cwd + offset;
	}

	/* cwd outside worktree */
	set_git_dir(gitdirenv);
	free(gitfile);
	return NULL;
}
示例#27
0
int chk_zero(int result, char *msg)
{
	if (result != 0)
		die_errno("%s", msg);
	return result;
}
示例#28
0
/*
 * We cannot decide in this function whether we are in the work tree or
 * not, since the config can only be read _after_ this function was called.
 */
static const char *setup_git_directory_gently_1(int *nongit_ok)
{
	const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
	struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
	static char cwd[PATH_MAX + 1];
	const char *gitdirenv, *ret;
	char *gitfile;
	int len, offset, offset_parent, ceil_offset = -1;
	dev_t current_device = 0;
	int one_filesystem = 1;

	/*
	 * Let's assume that we are in a git repository.
	 * If it turns out later that we are somewhere else, the value will be
	 * updated accordingly.
	 */
	if (nongit_ok)
		*nongit_ok = 0;

	if (!getcwd(cwd, sizeof(cwd) - 1))
		die_errno("Unable to read current working directory");
	offset = len = strlen(cwd);

	/*
	 * If GIT_DIR is set explicitly, we're not going
	 * to do any discovery, but we still do repository
	 * validation.
	 */
	gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
	if (gitdirenv)
		return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);

	if (env_ceiling_dirs) {
		int empty_entry_found = 0;

		string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1);
		filter_string_list(&ceiling_dirs, 0,
				   canonicalize_ceiling_entry, &empty_entry_found);
		ceil_offset = longest_ancestor_length(cwd, &ceiling_dirs);
		string_list_clear(&ceiling_dirs, 0);
	}

	if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
		ceil_offset = 1;

	/*
	 * Test in the following order (relative to the cwd):
	 * - .git (file containing "gitdir: <path>")
	 * - .git/
	 * - ./ (bare)
	 * - ../.git
	 * - ../.git/
	 * - ../ (bare)
	 * - ../../.git/
	 *   etc.
	 */
	one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
	if (one_filesystem)
		current_device = get_device_or_die(".", NULL, 0);
	for (;;) {
		gitfile = (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT);
		if (gitfile)
			gitdirenv = gitfile = xstrdup(gitfile);
		else {
			if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
				gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
		}

		if (gitdirenv) {
			ret = setup_discovered_git_dir(gitdirenv,
						       cwd, offset, len,
						       nongit_ok);
			free(gitfile);
			return ret;
		}
		free(gitfile);

		if (is_git_directory("."))
			return setup_bare_git_dir(cwd, offset, len, nongit_ok);

		offset_parent = offset;
		while (--offset_parent > ceil_offset && cwd[offset_parent] != '/');
		if (offset_parent <= ceil_offset)
			return setup_nongit(cwd, nongit_ok);
		if (one_filesystem) {
			dev_t parent_device = get_device_or_die("..", cwd, offset);
			if (parent_device != current_device) {
				if (nongit_ok) {
					if (chdir(cwd))
						die_errno("Cannot come back to cwd");
					*nongit_ok = 1;
					return NULL;
				}
				cwd[offset] = '\0';
				die("Not a git repository (or any parent up to mount point %s)\n"
				"Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
			}
		}
		if (chdir("..")) {
			cwd[offset] = '\0';
			die_errno("Cannot change to '%s/..'", cwd);
		}
		offset = offset_parent;
	}
}
示例#29
0
int chk_non_negative(int result, char *msg)
{
	if (result < 0)
		die_errno("%s", msg);
	return result;
}
示例#30
0
文件: builtin-merge.c 项目: samv/git
/* Get the name for the merge commit's message. */
static void merge_name(const char *remote, struct strbuf *msg)
{
	struct object *remote_head;
	unsigned char branch_head[20], buf_sha[20];
	struct strbuf buf = STRBUF_INIT;
	struct strbuf bname = STRBUF_INIT;
	const char *ptr;
	char *found_ref;
	int len, early;

	strbuf_branchname(&bname, remote);
	remote = bname.buf;

	memset(branch_head, 0, sizeof(branch_head));
	remote_head = peel_to_type(remote, 0, NULL, OBJ_COMMIT);
	if (!remote_head)
		die("'%s' does not point to a commit", remote);

	if (dwim_ref(remote, strlen(remote), branch_head, &found_ref) > 0) {
		if (!prefixcmp(found_ref, "refs/heads/")) {
			strbuf_addf(msg, "%s\t\tbranch '%s' of .\n",
				    sha1_to_hex(branch_head), remote);
			goto cleanup;
		}
		if (!prefixcmp(found_ref, "refs/remotes/")) {
			strbuf_addf(msg, "%s\t\tremote branch '%s' of .\n",
				    sha1_to_hex(branch_head), remote);
			goto cleanup;
		}
	}

	/* See if remote matches <name>^^^.. or <name>~<number> */
	for (len = 0, ptr = remote + strlen(remote);
	     remote < ptr && ptr[-1] == '^';
	     ptr--)
		len++;
	if (len)
		early = 1;
	else {
		early = 0;
		ptr = strrchr(remote, '~');
		if (ptr) {
			int seen_nonzero = 0;

			len++; /* count ~ */
			while (*++ptr && isdigit(*ptr)) {
				seen_nonzero |= (*ptr != '0');
				len++;
			}
			if (*ptr)
				len = 0; /* not ...~<number> */
			else if (seen_nonzero)
				early = 1;
			else if (len == 1)
				early = 1; /* "name~" is "name~1"! */
		}
	}
	if (len) {
		struct strbuf truname = STRBUF_INIT;
		strbuf_addstr(&truname, "refs/heads/");
		strbuf_addstr(&truname, remote);
		strbuf_setlen(&truname, truname.len - len);
		if (resolve_ref(truname.buf, buf_sha, 0, NULL)) {
			strbuf_addf(msg,
				    "%s\t\tbranch '%s'%s of .\n",
				    sha1_to_hex(remote_head->sha1),
				    truname.buf + 11,
				    (early ? " (early part)" : ""));
			strbuf_release(&truname);
			goto cleanup;
		}
	}

	if (!strcmp(remote, "FETCH_HEAD") &&
			!access(git_path("FETCH_HEAD"), R_OK)) {
		FILE *fp;
		struct strbuf line = STRBUF_INIT;
		char *ptr;

		fp = fopen(git_path("FETCH_HEAD"), "r");
		if (!fp)
			die_errno("could not open '%s' for reading",
				  git_path("FETCH_HEAD"));
		strbuf_getline(&line, fp, '\n');
		fclose(fp);
		ptr = strstr(line.buf, "\tnot-for-merge\t");
		if (ptr)
			strbuf_remove(&line, ptr-line.buf+1, 13);
		strbuf_addbuf(msg, &line);
		strbuf_release(&line);
		goto cleanup;
	}
	strbuf_addf(msg, "%s\t\tcommit '%s'\n",
		sha1_to_hex(remote_head->sha1), remote);
cleanup:
	strbuf_release(&buf);
	strbuf_release(&bname);
}